Just had a total engine failure due to a Circlip being side thrusted out of the groove. (Prop side) Pistons are standard issue from Jabiru. V6 Buick with the later Circlips installed. All correct such as gaps at bottom not compressed excessively and flats to the outside. No 5 failed and broke the Con rod. No 3 was about to fail (also prop side) with others showing side wear of grooves. Ideas anyone please?

I would really like any photos as I also have some I am willing to swap