@thorleif It is a case by case basis. Not all of the early grippers (like yours) have broke. As long as the set screw in the lead nut is tight, your gripper should work fine and won’t break.
It is hard to say what our designs may look like in 2-3 years, we may have an entirely new gripper design by then. When we update designs, I try to keep a few spare components on hand in storage for instances such as this, but sometimes we are just flat out.
For instance, we have a box full of R1 Lumen lenses (no other R1 parts) if anyone wants them 