Hello, I've begun to take apart my tractor to replace what I suspect are leaky O-rings right behind the slider linkage for fwd/rev on my GT14. From looking at an exploded diagram of this assembly, there are 3 bolts that hold the cam block support, ( the part that holds the slider) to the Hydrogear housing. These bolts are in a triangular configuration, and are recessed inside this cam block support. The exploded diagram calls the bolts socket head, 1/4 x 20 x 1/2 bolts, but I have never seen anything like them. They look like a 12 point socket, but more points, like 20 points. Does anyone know what size socket these bolts use? Where can I find a wrench that would fit over them? Thank You for your help. Rick