Buy a set of finger groove square-butt Rosewood Eagles and sell the S&W stocks. Your S&W 18 will be 100% more user friendly with the FG Eagles, maybe more than 100%, and your friends will ask you for Eagle's contact information after they handle your sweet 18.

Rosewood stocks go for $70 (smooth) or $90 (checkered).

www.eaglegrips.com

PS - The first set of Eagles that I bought were to go on a S&W 18, thirty years ago this month, and they have been so good that they have been a purchase I've never second guessed.