I have a question for anyone who has a Saito, or other metric motor on this thing. I'm having trouble putting the spinner on. I bought a spinner adaptor, but it's too long to let the spinner seat aganst the backplate. Anyone know where I can get a short (1/2" to 5/8") adaptor for my Saito? it's 8mmx1.25. the one i bought was about 7/8" to 1" long with the split cone end as a jam nut. I would have cut it down, but there are only 1/8" of threads for the spinner bot, and I would need to cut off 3/8" minimum.