Is there a bit recommendation chart? I have tried different feed rates, depth cuts for 1/2" Birchwood and I am only cutting a word yet this machine keeps stopping and there is nothing wrong. The wheels are clean. The dust bin is empty. Then when I press the yellow button it will start out of the track making a hole in the design. No mattter what I cut or the type of wood I use it does the same thing. At this point I rather continue using my jigsaw.