If I am not mistaken - those had an HST problem and were very $$$$$ to fix.
I would look into that before purchase - do some research on the net.
It might have been the T1860's....if that is correct - they might have fixed the bug moving to the 70 series.
I passes on it, would have been couple hour drive and too many times I made those trips only to find item wasn't as stated. Didn't really need it but if closer I would have at least took a look.
Thanks