I've got an older John deere gt235 48" deck with the k71b transaxle. It is leaking fluid from input seal only. Is there a known size of this input seal so I can order a seal for replacement that anyone is anywhere of?. I can't seam to be able to get the seal anywhere specific to the tufftorq brand, my only idea now is to order one similar in size before I disable it. if I could get any help with this it would be super awesome.