I appreciate the detailed help and story you mentioned. As this is a 63 Allis and the other owner parked it outside, makes sense to me what you said.
Got a question . In your view how did that hole make the problem happen some times, and then not others? Mechanics is sure not easy and this here is just one example of it.
By the way, do you recommend running Diesel engine oil in this gas powered 226 as another member suggested, this as compared to straight 30 W standard?
For what it's worth, ran a mechanics stethascope all up , down and around the block, but heard nothing loud. Just seems normal clearance sounds to me.
Thank You kindly for the help. Will see this gets checked as well.