Von Weise did make replacement parts at one time. That indicates to me that linear actuators had a wear problem. I think any of the three, if bad enough could effect the count. The replacement parts listed in my old schematic are:
Timing gear kit
Thrust Bearing Kit
Screw Kit
Replacement motor is listed too. But I don't think that would change the count.
I suspect my count change problem is related to the shielding on the wiring. I think the shielding might be broken somewhere and is letting stray signals of some sort in which change the count. I would have to dig up 150' of wiring to replace it. It's not bad enough yet for me to do all that digging, so I'll live with it
Timing gear kit
Thrust Bearing Kit
Screw Kit
Replacement motor is listed too. But I don't think that would change the count.
I suspect my count change problem is related to the shielding on the wiring. I think the shielding might be broken somewhere and is letting stray signals of some sort in which change the count. I would have to dig up 150' of wiring to replace it. It's not bad enough yet for me to do all that digging, so I'll live with it