I have an 87 V20 /forums/images/graemlins/burb.gif. Diesel, TH400, NP208. It no longer has 3rd gear (slips bad) and reverse chatters horribly. A local trans shop quoted me $825 /forums/images/graemlins/deal.gif for a rebiuld (installed) w/ 15 month warranty. I'm used to paying $350 for a car TH400. He said it's because it's a diesel. Is this a fair price?