Have a Ryobi BTS12C, very similat to the BTS10. It has the bevel lock on the front and I cannot get mine to lock enough to hold the blade at the desired angle, not even to do a straight cut. I have tried adjsuting the nut but can not seem to get it out far enought to lock teh bals ein place. Most table saws have wto adjsutments one for height and one for angle, this saw only has one in fron that does both. Any help would be great. Greg