Well If I in fact do have a pierce lift I can get a seal kit for it or even a whole new cylinder. this looks exactly like what's on my truck. Might just go for the cylinder...free shipping... I can rebuild the original at my leisure & use it on my utility trailer for a dump feature.

[Linked Image from live.staticflickr.com]

I know a lot about a lot of things BUT I still have a lot to learn.
Life is what you make of it. So, why not make a working machine to make it easier.