The speed selector assembly on our school's Jet 1442VS is severely damaged and needs to be replaced. I assume the damage was caused by a careless student. Trouble is the assembly has been discontinued. I tried ereplacement parts, mmtoolparts and ebay – no luck. So our big Jet lathe sitting in the school is now practically useless. The school is run by a charity organization in Mexico for disadvantaged kids. Any ideas on where to find one?