If the cut quality on your 536 shows small peaks, or skips in the cut, then try the following procedures. Put a new blade in, lower your force to about 30, do a test cut. Increase the force (if the overall cut looks smooth), until it is cutting to the correct depth. 

 If the cut still looks ragged, then take the blade out of the blade holder. Take some WD-40, spray it up inside the blade holder, shake or blow out the excess, then install blade and try again.

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