I did get the cylinder taken apart and got the seals replaced. I'm hoping to get it reinstalled tonight to test things out. To answer my previous question, yes the center piston is used to push out the end caps and it does take quite a bit of force to do so.
One item I'll contribute to this thread is something I saw in the WSM. To help in removal of the circlip, drill a 0.1" hole 5mm down from the end of the cylinder. This hole lines up with the circlip groove and allows you to push it out of the groove from the outside.

One item I'll contribute to this thread is something I saw in the WSM. To help in removal of the circlip, drill a 0.1" hole 5mm down from the end of the cylinder. This hole lines up with the circlip groove and allows you to push it out of the groove from the outside.
