I need some good input on an 15ft 820 head. I put all new hold down and wear plates on since the knife had a good bow in it and it was wearing really bad. So I took the knife out and straighten it pretty well. Now it was a bear to put back in and it wont hardly move in there at all. its like its binding on something but I cant seem to see at all what its binding on. any suggestions on what to look for or where?

Zach
 
Sight along the track of the knife and see if the whole thing is bowed. My NH 461 had a good bump up in the middle, as though someone had hit a stump or something pretty hard. With the knife out I was able to straighten it a bit by bending the edge back down with a 24" crescent wrench.
Zach
 

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