I have an L4330 GST with an LA-853 loader that has a leaking cylinder.  One of my bucket curl cylinders has a slow and steady drip.  I can't see any scars or dings on the shaft.  My local Kubota dealer wants $150 for the seals for this cylinder.  Are there any alternatives out there?  I can't stand the thought of paying $150 for some bits of plastic and O-rings that will fit in my hand.