Hey guys, I'm trying to adjust the neck on my bass cause the action is way too high. I've got the neck straightened out but the action is still really high at the 12th frets and up. It's got a stationary rosewood bridge so I can't adjust it there so I plan on shimming it. My question is, how do I know what size shim to get? StewMac offers a few different sizes but if I can avoid finding out by trial and error I'd prefer it. Any suggestions?