Excited about my new wheels, I went ahead and changed my freewheel cassette over to my new Williams 25 Disc wheel. Installed everything, and took it for a short spin. However, something didn’t feel or sound right (like a little clicking).
Upon further inspection, I found the cogs were loose. So I tightened the lock ring further, but still too much free play. So I transferred the cassette back to the old wheel, and it’s as snug as can be. Put it back over, and the same problem. After an hour of really close inspection, I looked at the old wheel, and in the back of the freewheel, I found a really tiny spacer (one that you couldn’t tell unless you inspect it really closely). I transferred that little spacer over, and now the cassette is as snug as can be.
Luckily I inspected this closely before going on my turkey day spin. Oh, and Happy Thanksgiving everyone.
Sevencyclist's Blog 
Its the little things that make all the difference! Well done sir!
It was driving me nuts … But at least I finally figured out what was going on. I mean, it’s my new wheels 🙂
Agreed! I would’ve done the same until I found it!