Well mine has a problem too; one of the holes wasn't tapped right and the bolt won't go in. I even tried another bolt and no luck! It doesn't affect the sander for my uses though. Rather than send it back I might just retap it myself.

Anyway, I'm having pretty good results. Most definitely start with cheap knives.





???How do you guys get the tip right? Do you use alot less force??? This seems like the hardest part for me to get right.