Its unbelievable how some people think an electro-mechanical
device 30 yrs old can be guarantied at all. Pure stupidity.
Next time have a bill of sale with "as is for parts only" & have them
sign it. If they dont, show them the egress.
On old dried up junker sets we would often beg them not to fix it.
If they insisted we would have them sign a paper that basically
said " warranty ONLY on parts replaced " then some legal sounding
crap. Half of them quickly changed there mind.
73 Zeno

LFOD !