I just purchased a used Thomas 135 with 2900 hours everything operated well and is tight except the aux hydro.... it works on the switch I'm assuming bc engine changes when you turn it on and one fitting leaked when pressurized. But my question is that is it reversible!? Can I use a grapple bucket? Or is there a way to make this possible? The aux button on the drive handle is broken so I'm gonna have to replace that somehow... I'm new to skidsteer I've used a mini x at my old job but never a skidsteer!! I bought it to clear a 5 acre plot of one I own in my spare time