I fired up the motor for the 1st time getting ready for spring, it had a rough idle!! Found the air leak (it's a crack) at the fuel pump where the main fuel line ties in from the gas tank. I've looked around (boat repair shops) and can't find this single part, and have been told i'll have to buy the whole fuel pump (MUCHO $$$$). I've tried JB weld to plug the leak but it's not holding, any advice? Where can I find this single part of the fuel pump?