If you haven't watched the Band Saw Clinic with Alex Snodgrass, you should (scroll down below). The main tip I got from Alex is where to put the bottom of the gullet of the blade on the upper wheel. Now I have been using my bandsaw for over 30 years and have been happy by putting the blade in the middle of the upper wheel. I don't do any re-sawing, I'm a turner. Cutting green wood doesn't take precision, so I thought I didn't need to put the bottom of the GULLET of the blade in the center.
The other night I was cutting up some fresh silver maple and my blade froze up. I was using a Woodturner's Blade, and yes it was old and needed replacing. This time I put the bottom of the gullet in the middle of the upper wheel. Well, it does make a difference! The blade cut easier and went where I needed it to go.
Sometimes it a takes an old horse awhile to DO the new trick.