Hi Rory......I'll take that hug and send one back with this:Another older thread that would possibly be useful (and includes numerous links within it such as Frets.Com and the Buzz Feinstein stuff) is located HERE.....Be sure to click the links in the thread too!
By the time you're done reading you should have a pretty good idea as to why intonation can be a problem, more than you want about compensated saddles and the like and some additional stuff on capos.
Spaw