I have an Excello 602 mill. I was having a problem with the power down feed slipping on the quill so I took it apart and cleaned the tapered clutch face. Now that I have it back together the down feed using the front handwheel will not feed until I tighten the side handle. Once the side handle has sufficient tension to make the handwheel feed it is extremely difficult to move the quill using the side handle. Is there some adjustment that I missed when I put it back together? The one thing which I did notice is that the shoulder bolt in the brass clutch cone was not bottomed out when I took it apart but it would not seem that a shoulder bolt would be used for adjustment. There does not appear that there is any thing which is adjustable. Anyone had experience with the quill feed?