I can stil move the saddle sideways a little but I seems not to go up or down anymore
You mean the post 'wobbles' or you can twist it? The seatpost shouldn't ever wobble (have any play in it) at all, even with an open/busted seatcollar. If it does, it's too small for the frame.
You mean the post 'wobbles' or you can twist it? The seatpost shouldn't ever wobble (have any play in it) at all, even with an open/busted seatcollar. If it does, it's too small for the frame.