Hi all, on my MF1529, got done blowing some leaves with the PTO driven blower( about 1.5 hrs) , shut off the control switch then moved the selector lever back to neutral.....10 minutes later decided to blow some leaves next door and cant get the selector lever to move from neutral to 540 to engage the gear drive...I haven't "forced " it yet but ive never had this trouble before...any comments/suggestions?? thanks in advance