Overbored

the YM engines have a tube for the dip stick that is fastened to the oil drain port with a bango fitting so it picks up oil from the lowest point of the oil sump

Fixed Really! I can see how you can trust that repair, can't still leak because they used the whole tube, just be glade they did not have a bigger tube of the stuff, but its looks to me like they might have missed a spot. it is not where you apply it, it is how much you apply

Well nuts are cheap just get an assortment. a long well nut will still tighten even if the wall is smalle . I would say it is between 1/8" and 3/8"

tie it and go sailing. the line is going to loosen up from creep for many outings until it finally takes a set and stops. Dyneema does not make the best lashing because of creep and knots do not stay tight.

I believe you have a leak in the tube or rubber itself but If you are convinced that the problem is not a crack in the tub or the rubber sleeve then the problem is a channel in the rubber or a groove in the tube. the channel where the water is leaking thru could be formed by the manufacturing process of the rubber. the pressure that is causing the leak is quite small around 12 " wc so most hose clamps can compress the rubber enough to make a seal. if the rubber is so loose on the tube that it is overlapping itself when clamped it will create a channel for the water to seep thru. so you need

yes I did and they offered to send a different color if I did not like the fact that they decided that black is the new blue. so I decided to tell as many Random strangers on a specific Sailing forum because they might want to know instead of finding out the way I did by wasting $$ I know posting sailing stuff on this forum is not the norm but if just a few do it it might catch on.

If you are putting anchors then yes G 10 or this white fiberglass material from Mcmaster Carr https://www.mcmaster.com/2194K29/ its is white and just as strong a G 10 for your application. makes great battery boxes

Thought I would try a different Line manufacturer, Rant: I purchased some Robine Dingy control line BLUE in color to go in some Blue cleats to replace a Blue line and I got line with a blue core with a black cover. yes it could be a navy blue cover but no it is black as black comes. Hey Robine, why even make colored line if you are not going to make colored line. so now I will just have remember when I want the blue line I will pull the Black one that is right next to the other Black line, problem solved

both engines again?

Zolatone series 20 is what a lot of dingy makers have used to hide the fiberglass weave on the inside of the hull easy to spray and holds up very well. has a mat finish and texture like non skid. gloss will show every flaw in the surface and be slippery https://tcpglobal.com/collections/splatter-finishes

From Awlgrip: Anticipated Cure Time at 77°F/50% R.H: 24 hours to tape free; 3 days to light service; 14 days for full cure. at least 14 days, you want all the solvents out of the Awlgrip before you apply vinyl

Not carbon fiber and yes it is a weird way that all the PVC awing and sail tracks break from impact. has to due with the internal stress from being extruded. have had Tuff Luff foil racks break this way from impact with the spinnaker pole. looks like the Seldom glue on sail track which breaks very easy if hit on the side

if the threads are still good I would use some 3M 4200 sealant on the threads, this will seal and keep the bolts from coming out but will be removable if needed. also protects from Galvanic corrosion, no water then no corrosion. if the thread is stripped then use epoxy to restore the threads. if you need to remove the bolt latter then use a heat gun to heat the bolt slightly to remove. use thin plywood with a hole in it to shield the carbon mast from the heat while heating the bolt head.

hit the track on something and broke out a piece. plastic track if that was aluminum it would not have broken and the edge would be silver aluminum color . her is a video showing a good mast

towed our Prindle Cat with a 68 VW to San Felipe and back about 400 miles never had a problem. had a coffee cup that road all the way back home still sitting on the tramp.