Just got my first kubota. Its an L4310 with loader and backhoe. My question is if locking the brake is the only way to park it on a hill. It has the GST tranny and after turning off the engine the tranny will not hold it after a minute or so. I have lots of hills and very few flat places and dont want to find it at the bottom of the hill on its side some morning. I already drop the loader but am scared that it may bleed off a little and let it roll. What should i be expecting from it?