[George16]

I'd rather use small o-rings to take up some slack on the center shafts. As for the Strobe sprong, I was about to buy one for $25 but I chose to use a hard rubber gasket for kitchen faucets that I bought from the jJpanese hardware store for $2 and inverted a stock 3906 slipper metal holder to keep it in place. I have not run it yet but it looks like it would work. If not, $2 is nothing to worry about :).