I just received my new LX3310 open station tractor this afternoon. One reason I upgraded from a 2004 B7800 was to get the upgraded seat with the spring adjustment that is adjusted with the T handle located at the rear of the seat. I have adjusted the tension on the springs as loose as you can get it without totally removing the T handle and as tight as you can get it by tightening the T handle all the way up until you have used all of the threads on the adjustment bolt. No matter how I adjust it, the seat is still rigid with no movement at all in the suspension mechanism that appears is intended to allow some movement. I think this same setup is used on some other models. If anyone has experience with this type of suspension seat and could shed some light on my problem, I would appreciate your feedback.