bought shortblock from "HIGH QUALITY - PRE TESTED - CLEANED - 6 MONTH WARRANTY*" local company install motor, no start. tow to shop, have converted to obd2 ($300), rough. have valves adjusted ($150), still so rough it's undrivable. Compression tests at 90/105/125/125psi. motor seller guy says "omg we test everything i dunno how it would have got out of our tests like that, bring it in i'll give you another one" so i'm out the 450 for installation, plus I have to uninstall/reinstall, just to get another potentially tested (and potentially fucked) motor. it's been suggested I file a BBB complaint and request a refund or split costs or reinstallation ... anyone been up against this before? Would that stand a chance?