is there a secret to cutting wood more precise? whenever I'm cutting, there always seems to be inconsistencies in my cutting. I use a quick framing square when cutting, but sometimes I have to recut or use shims. also I found out recently that not everything is what is marked on home depot 2x4studs. some where a little longer than 8' and a couple were actually cut a couple of inches shorter. when I checked the ends they showed that someone had cut them. I assumed that these were returned items.