The cat now has Bronze ball valves but they are corroding up. Still work but thought if the boats coming out I'll change them all. Was going to use epoxied ply plates on the inside. also was going to chamfer the holes slightly. Just needed to know thoughts on best sealant. It seems the 5200 is the route
. Problem may be getting it on a plane. We live in alberta. Boat is in Mexico
PVR. Had issues before trying to take some PL Premium through the checked baggage. Customs
didn't like it too much till I explained what it was. 5200 may be the same.