Been running my 3320. Over the last couple of days I have noticed when trying to back up I get error code 14. I shut off the machine start it back up and it clears up but it has gotten progressively worse. Having to shut it off and start it several times to get it to move backwards. Finally it has gotten so bad I can't seem to clear it at all! Looked up the code...not any info on fixing it other than calling the dealer which I try to fix my equipment myself. Sounds like it needs to be re-calibrated. Gonna order a tech manual tomorrow but don't want to wait for it to get here to find out how to fix. Anyone here willing to help me?