The set screws were a problem years ago when I bought my jointer - I
would hope they fixed that problem in the last 10 years... I needed
to cut two of the set screws, one was so badly cross threaded that you
could see it was out of true by at least 10 degrees. I called delta
and they sent a replacement piece. Other than that problem on day
one, the only other thing I have had to do was clean the on/off switch
after it built up some carbon on the contacts.