Recently sold my OTC 4000E to my buddy. Plugged it into his '85 at the track last weekend and started her up. With 15 gals 93/ 2 gals c-16 he had 17 deg. knkr just sitting at idle. Found the oil dipstick tube to be hitting the heater/ blower box shield, but it did not improve anything after we fixed it. Any ideas? Thanks Brian