While I'm waiting on parts, is there any way to clean out any of the oil passages or other oil-related items? Or is that even worth messing with? The valley and crankcase area have something that looks like a coating of crud - light, but not as clean as the 68 440 was. I assume that the oil passages are cleaner because they were always full of liquid oil, not oil vapor, blow-by, condensation, etc. Cleaner is better, but I don't want to spend time on something that won't be a benefit.

Thanks,

Clair