Originally Posted by bds81175

When I do a vented bladder build, I fill the shock with oil, hold the bladder gently over the top of the shock, and push the shock shaft all the way up to the rebound that I want. If you want zero rebound you need to do this with the spring seat on otherwise the piston will drive up too far. Once you are at the rebound position you want, pull the shock shaft back down just a little bit to vacuum the bladder down onto the top of the shock and hold it there. Thread the cap on. Not sure if that is the perfect way to do it but that is what I have been doing.