I run the stock shock, but when I set the rebound I have a piece of fuel line tubing thats about 5mm long and slit so I can slip it over the shock shaft. I put this over the shaft and then push the shaft in till it goes as far in as it can, and then tighten the end cap assembly, this gives me the same rebound each time I build the shocks. It comes out to about 25% rebound.