We recently acquired a spare unit which works pretty well except for a bent shaft in the focus mechanism. I've been trying to find a parts list for this without success. It would be nice to be able to sharpen the lithos.
If they don't have it, it can't be had . . . I'm not sure where the leadscrew would be in the head, but the expoloded views should make it findable. If all else fails, god forbid, you might actually contact High End support . . .
Or, about three clicks into the High End website is the parts list:
