I HAVE A 2013 X360 AND WHEN I PUT THE MACHINE AWAY AT NIGHT THE DECK IS RAISED AND IN THE MORNING THE DECK IS SITTING ON THE DECK WHEELS IT ALSO LOWERS IF THE MACHINE IS USED TO HAUL BRUSH AROUND THE YARD SO I HAVE TO RAISE THE DECK ALL THE TIME. DOES ANY ONE KNOW IF THERE IS A ANTI DRAIN BACK VALE THAT COULD BE FAULTY OR IS THIS NORMAL? THE TRACTOR HAS ONLY 3 HOURS ON IT AND THE FLUID FOR THE TRANSMISSION IS FULL WHEN COLD AND THERE ARE NOT ANY LEAKS THAT I CAN SEE. THANKS