I have been scrolling small crosses for a while and never had difficulty till this week. Mike in SD sent me some sample blades to try and get rid of the desire to raise up and make me jumpy. He sent me a 7 that worked fine in my dewalt yellow saw but the 3 he sent would not even start to tighten in the clamps. I called him and he said no one has trouble with the dewalt that way. Anyone have any ideas beside cleaning the clamps. It's not slippage it's not even getting close to holding them. Anyone have any ideas. My delta saw held them fine. Any ideas. Harry