Spirolox Fit Issue

Not Mopar, but I figure I'd get some decent thoughts here. I have some oddball 4-banger Arias forged pistons here, and the pin bores are at .912". Got some JE 2 layer spirolox that fit the .042 width of the pin lock grooves just fine. And the .927" diameter sizing of these spirolox should be OK for the pin bore size.

But when I fit one in, the ends of the spirolox just barely overlap the step in the middle of the spirolox... I mean just barely. So of course, it won't quite settle into the groove there. I think what is going on is that the groove depth is on the shallow side. It is only maybe .020-.025" deep, and that makes the groove outer diameter smaller than maybe normal.

I can't find a .912" spirolox in a .042" width anywhere. And the next size down in diameter looks to be too small for a .912" pin bore.

So:

1. Anyone got a performance type of piston to measure the pin lock groove depth? I just never pave paid attention to what is typical. I am gonna root around to see what I have here.
   
2. I am thinking of just trimming these spirolox maybe .100-.150" at each end. Comments?