Back feels much better today. I got out today and got the cylinder apart. Came part pretty easy. The seal/dust seal that you see is the only seal there is. The interior piston has no o rings, they look like giant engine piston rings. There are 3 grooves with 2 rings in each groove. I guess I don't have to worry about the main piston being absolutely sealed because the resevoir is on the low pressure side.
