I have a 29 DBDA 6 Still trying to get going. Need advice. I have oil sludge build up found when I removed side covers. I know I would need a new head gasket if I did overhaul. What about bearings other gaskets? I did a compression test and it's not good news. Two cylinders are at 25psi, one at 50psi and the rest are at 0.The car did run for about 15 minutes and then started to idle very rough then stopped. Replaced carb, new gas lines gas tank cleaned vaccum tank cleaned. I need your input.