I just got my Two Bros Black Series CF slipons installed on my 08 Z1k and have a slight leak on the right exhaust where the mid-pipe connects behind the cat. I've tried loosening the coupler up and retightening it, but there is still a slight leak. Is this typical, or should I make sure it's 100% tight? From talking to a few people I should be able to buy an inexpensive roll or exhaust tape to help seal the exhaust where it connects. Is this the best route, or is there a better way to go about this? I know it can be wielded, I just feel like that's overkill, and in the event I want to sell the bike years later I can't just put the stock exhaust back on.