That sounds reasonable Kelsey - and it may be all in the definition of "light contact". I'm used to hearing them make a sort of quiet hissing when they run, but Bruce and Deejay recommend a quiet hum. The hum implies no contact, the hiss a very, very light contact. In either case the cylinder should continue to spin freely for a couple of turns if you give it a twirl by hand.
I'll leave this thread open for a day or two, to give people a chance to make further comments if they wish.
