B2650 HST. I moved the tractor from the back of the garage yesterday to install the snow blower for winter. Started it to warm it up and went to reverse it and no go. It moves forward but the pedal is froze for reverse. Even when engine is off the pedal is froze in reverse. Any idea what is going on? I did hose the machine off too yesterday and I see a couple of position switches on the linkage. Wet maybe?