ok guys, we just installed new piston rings, and put rebuild kits in the carbs, problem is now its hard to start when it does start it doesn't want to run off of choke. at first it didn't want to fill the fuel filter, we finally got the air out of it, and it filled, but still doesn't seem like the tank is pressurizing right. we went back and double checked all of our fuel lines, they are correct. any ideas?