I bought an ultimate seat at Spyderfest a couple weeks ago and up until today everything has been good. I left the backrest in the seat while I was at work, something I haven't done up until this point and now for the life of me I can't get the driver backrest to even engage to slide out of the housing. Has anyone had this problem in the past and if so how can I fix it. It wouldn't be a huge deal if I could put the rain cover over the seat but I can't. Would love some feedback and help.