OS 120 Surpass ring, where to get parts?
Actually if your engine has been in storage for a length of time the ring may be frozen to the piston. I have a brand new 120 pump that feels the same and that is the cause.
Take a heat gun and warm the cylinder or put it in the oven at 125 degrees for 30 minutes to loosen up the congealed oil.
These motors really didn't wear out that fast.