Kinks in band saw blades?

I’m getting very rough cuts with my band saw. Here’s my setup:

• Fairly new Jet 14” with the riser kit
• Three Timberwolf blades: 1/8” HP 14 tpi; 1/4” PC 6 tpi; 3/4” PC 2/3 tpi
• I own and have read much of Duginske’s Band Saw Handbook

I’m pretty sure I have the saw set up reasonably well. When cutting the feed angle required to cut a straight line is just off to the left a little bit with only normal blade tension. I don’t have to crank down on the tension for that.

On my 3/4” blade I can see a twist in it where the weld is as it goes around. It seems pretty clear that is causing the rough cut where the teeth of the blade jog to one side a bit each time the weld comes through the cut. So last night I changed blades to the 1/4” blade. After resetting the bearings and the depth of the cool blocks, the first thing I checked was how the weld section of the blade rides. It seems to be in-line with the rest of the blade and smoother than the 3/4” blade though hardly perfect. But I still get a very rough cut in just 3/4” pine. I’d guess that the effective kerf, after removing the rough cut will be at least twice what it needs to be.

Is there a way to straighten out the weld section of my 3/4” blade?

Any thoughts on what else I should check or try?

Thanks for any help.

-- johnjoiner