This is a first for me after 30 some years of scroll sawing. I'm using a DW788. The last 2 items I cut had a angle/taper as if I had the table tilted. I triple checked to see if the blade was square to the table and it was dead on each time. I changed the blade and ended up with the same issue. I now scratching my head, I checked to see if I could find something that was loose or broken, everything checked out ok.I did some check cutting on a piece of scrap with the same issue. I finally change to a different blade from a different manufacture, ah the light goes on, it appears the whole batch of the blades are bad. I had found some #3 blades from RBI the woodrunner ones. Up until this issue I thought they were the best blades I had used. I think I'll throw the rest out, I still have 4 dozen left.
Just thought I'd pass this on. You are never to old to learn something new.