After going through this thread at work and having numerous interuptions (my modem's acting up at home), I find myself in (almost) total confusion about the gasket issue. I'm sending a 2000 SVT UIM. Do I need to send/tell EH the replacement gasket for reinstallation? I'm seeing something about a 34 or 35mm gasket and then another size too. What should I do? Sorry if this is a dumb question to the guys who understand these, but I don't. Thanks for the info.