[Big-Foot]

One of the following;

If you've already checked the clearances with a micrometer on both the crank pin as well as the assembled rod - I think you better check to make sure that the rods were installed correctly on the piston - or - that you're installing the piston/rod assembly into the correct hole with the correct orientation.
Hint:
The chamfer on the big end of the rods needs to point to the outside and not towards the neighboring rod. This chamfer corresponds to the chamfer cut into the side of the crank pin.