I got another moorespeed for rubber racing. The thing didn't have the 12mm o-rings for the adjustable spring collars! I've been looking everywhere for them! HPI50432
You think the hardware store will have these 12mm o-rings?
My pro4 manual shows the 50432 o-rings but they did not come with the kit and I have never used them. Not sure what they would even do very well ?
The Cyclone manual dose not show them so you should be OK with out them.