Tom,
I haven't been able to find out much about it but I will be taking mine apart and fixing some issues. The teardrop parts place only has the springs, nothing to fix the shafts. He may be able to sell you some used assemblies as he usually recommends that people replace it with leaf springs and an axle.
I did talk to another owner who had theirs apart and he let me know that the the tubes where the shafts go are lined with cork and he hasn't done anything wih his. I'm going to be looking into having bronze bushings machined to fit. I want to take out the slop in mine.
Here is a picture for those not familiar with the Ken-Skill suspension.
Nick.