Mark the hole on your banjo bolt in back and make sure the hole is lining up, if not shim it. Spider! used some ninja reg shim's. I used about 8 angel shim's, there super thin. Make sure the piece on the end of the power tube us on tight, the one that can be removed with a quarter. There a load of fun when you get em going. There is a good vid on youtube about how to replace all the o-rings. My Ninja tank is putting out 850 and the RT is pretty reactive for me.