I have a P226 which has always felt very oversized for my hand, so I bought an E2 grip module/kit. I was able to get the original grips off and switch out all the internal parts, but now I can't get the clam-shell plastic grip to seat all the way on the pistol. The lower portion of the grip will lock into the place, but I just can't get the top to snap in all the way. I just need to move it a tiny bit more and the posts on the frame should pop into the holes on the inside of the grip. Is there some trick to this? It doesn't seem like a complicated procedure, but I sure can't seem to make it work. Thanks.