First of all, thanks for allowing me to join. I've done a second cut with my zero turn, and notice the right arm has more resistance than the left arm. After turning the machine off I could hear the right arm seems to be rubbing against something. The left arm moves considerably more freely back and forth. I have yet to investigate, but wondering if anyone else experienced this. I also noticed there is a horizontal mounted hex head capscrew at the base of the arms just below the rubber boots. One is screwed in further than the other. I can not find anything in the manual that covers this. Any comments will be appreciated. TIA