Alright here goes. I've recently started getting into bass solos like anethesia and orion. I really love to play them and I just finished anethesia recently but every time I get done playing it my hand starts to hurt . At first I thought it was because it was just a really hard song to play but when I was watching cliff 'em all I noticed that he keeps his thumb way over the top of the neck instead of in the middle of the back of the neck like everyone keeps telling me I should do. I tried to play it with my thumb sticking over the neck (except for chording positions and long stretches) but it didn't seem to help very much so I figured I'd come strait to the experts here at talkbass to see if you could help me. It really isn't that hard to keep my thumb on top of my bass neck but some of the four fret stretches seem impossible while doing that. I would appreciate any advice you could give me. Thanks.