If you absolutely can't stand it anymore I'd buy a replacement and then grind the finger groove out completely, leaving the ability to lock back with an empty mag. I'm not sure how well it would work since you're decreasing the mass of the slide stop, which is why I said to buy a spare lever to experiment with.
Here's a toast to our wives and to the women we loved. <pause> May they never meet.
The M1 Garand rifle is the best battle implement ever devised by man.