My SuperZ (26 Kaw LC with 60" deck) has developed an annoying problem. It appears the brake on the left wheel is getting weak. Where that becomes an issue is during travel from job to job on the trailer. By the time I get to my destination, the left side has backed up enough to cause the mower to sit at quite an angle. Often the deck is rubbing against the fenderwell of the trailer. The other day, I accelerated a little strong from a traffic light and watched it in the mirror. Sure enough, you could see the back wheel roll back a little. It's not totally gone, but it sure doesn't do what it's supposed to be doing. By the way, it has a little over 530 hrs. My dealer said bring it in when I can, but for me, that's at least two months away for a problem no bigger than this. Any suggestions on what I can check or adjust? Thanks.