I have a set of Spicer drive flanges for my D60, specifically I have 2x spacers / 2x pucks / 2x caps. In some illustrations I have seen a spring between the spacer and puck but I don't have any. Anything good to substitute? Do you have to have the springs?
There isn't a part number for the spring so I may use one from a set of Spicer hubs and see how that works. 

