hi, new to the forum with a ? I have a 3016 hst and today i was brush hogging a group of small saplings about 1" size. As i was backing down the hill while cutting them the tractor went to full reverse speed on its own and now the tractor wont stop like it did before when you let off of the pedal forward or reverse it slows down to almost a stop but still moves. I checked everything under the tractor and no sticks or debris around the forward/reverse arm. The tractor only has 117 hrs on it and just did the 100 hrs service. Could the springs be weak already or could it be something else? Love the tractor has done everything ive asked of it and more!Thanks