hi all

I have a bit of a perplexing problem and would appreciate your insights-
I have an old peugeot (i think uo8) frame which I've built up with modern (duraace 10 speed) running gear.

I bough a 1in aluminium seatpost which was a very snug fit into the frame, but the problem is that even with the seat-tube bolt cranked VERY tight, I can still move the post side to side (rotational). Strangely, it takes my weight and doesn't drop down at all during a ride, but can be easily moved side to side.

the bolt wont go any tighter and the slot in the seattube is completely closed. i did put some grease on the post- was that a mistake??

any thoughts?


poggor