that definitely sounds like more than not having a cs bridge. Unless of course it used to be there and was somehow detached. I learned that CS bridges are not necessary on some track bikes because of the short chainstays. sometimes there isn't much room for one. my track bike made from simple true temp heat treated has never been a problem without a bridge. I built a track bike with tt platinum cs a while back with no bridge and the owner has used it pretty hard on the street and velodrome with no complaints. in both cases the riders are sub 200lbs. I have heard about using them to take stress off the bb joint and may start adding them to every bike but I figure since Yamaguchi taught me to do bikes with sub 400mm stays without a bridge that they will probably hold up fine.