It is improbable although not impossible that both #1 and #6 would bend rods identically based on the angle of the piston from back to front theory or diagnostic method. And seeing your head gasket DEFINITELY BLOWN in your pictures at #1, around the main oil channel, which if a breach is there, could easily justify why so much oil was being consumed by the engine, but still allowed the engine to perform well in all other aspects, at least in my case (couldn't hold good compression at #1 and allowed excessive oil to enter the chamber from the gasket breach, simultaneously). Anyway, I'm way more motivated to open that engine and hope to see a blown head gasket. And am glad that #6 was angled forward in the bore, just as #1 was. This is really like a roller coaster ride, up one minute, down the next, then back up.

Question Sixto??? What does the ridge look like at the front of #1? Is it excessively more worn than at the ridge point at the back of the piston's cylinder or at any other place? Can you detect any ovalness or out of roundness, is what I'm asking?

BenzDiesel