Hi (my first post), We have a 1985 Sunrader on a 1 ton chassis with 22re. I removed the tank to replace the fuel pump. upon re assembly I replaced the line to the charcoal canister and the fuel return line I believe they were routed to the proper places but pressure builds up in the tank after being driven a short time. One thing I'm not sure of - there is a plastic insert with a small pinhole in one of the lines obviously to restrict flow - not sure if I replaced it in the right line. Should it be in the gas return line or the canister line (which is where it is now? Thanks for your reply.