I have a Parker 21 in need of a new sac. Unfortunately, the plastic of the sac nipple (below) has become soft which one repair video said was a known issue. What are the best ways to repair?


My current plan is to cut off the material, bore out that end of the connector (?) on the lathe, and fit a metal or plastic tube on to replace it.

This way I don't have to scavenge parts and the fix will be an improvement on the original in terms of longevity.

Maybe there is a more preferable process though?