This is great now the bike rides better than ever. With a little help from all the riders in the near area. I picked up a new back wheel from Dennis McCoy It is a Profile SS cassette hub with a 13t driver and DK spokes on a Perigrin double wall rim. I put a new tire, Maxxis Miracle 20x1.85, fixing that rear hub problem. Last night I picked up a Odyssey Race fork and a new front wheel. It rides a lot better that it did when I bought the thing.