Aside from the fact that doing different HG on each side is a total "hack" way to fix this...

The .025" is pretty tight. I ran one with KB pistons's before between .030" and .035" and you could just see signs of "kissing" the head. This was at 12.2:1 that I would run most of the time on pump gas, but it had a 250@.050" solid roller in it, so I had that to help the DCR.

I would back the Piston to Head down a bit, and let it go. Worst case is that you watch the plugs close and take a couple degree's of timing out of it.