Yes, I bought an enlarger lens that needed a rare-ish lapla lensholder for my Lab 1000. He didn't have one, but ended up having some made, mine included. The machinist screwed up and put the wrong size thread in, I returned it and the replacement is on the way. He has been good to deal with throughout, and at one point even offered to loan me a lens that would fit a lensholder he did have in stock while mine was being made. I already had another lens and lensholder that would work together, so didn't need to take him up on his offer.
He told me that he spends 200 days a year on the road, servicing and installing Durst equipment, but he has never failed to return my calls and has kept me up-to-date on the status of the lensholder. I was impressed, especially considering that this is a pretty small and inexpensive piece of gear.