RDanz,
With all due respect, I don't see how the piston could travel all the way to the top of the block (i.e. is within spec) and yet be out of round due to bent rod to cause oil to get by...... maybe you are right... I thought there might be some unconventional wisdom here that would show me where we are missing the mark/have not yet considered so I can get this problem resolved.

Your thoughts on the piston at the top vs. bent rod possibility?

I do appreciate your thoughts and feedback. Really curious to get your thoughts on the piston at the top vs. bentrod theories.....

Many thanks,
JMH