These shocks are pretty good really just have to be careful threading the alu parts on. You have to rurn them backwards til they find the threads abd click in. Otherwise they are very easy to screw up. Aluminum bodies would be better but the plastic ones are very light.
Never had a problem with leaks.
I.mifht try a different diaphram but as far as my s1 goes meh.
Ill spend some good time with my r1s when they arrive.