Hi, Hong Nor is still out there but there is one one store that might have parts check www.nitrohouse.com. they show some jammin parts and others on their website. I used to buy from him exclusive but when Ofna bit the dust around 2012 there is not much left. There are a couple of sellers on Ebay that might have what you need and you are going to pay out thru the nose for these parts. I have my Team Durnago DNX with an OS 21xzb verii just wishing to be started and for now its a shelf queen.
good Luck
Michael Johnston