Hello! My conversion donor has a frame geometry such that the seat is relatively high. The height is not a problem as such, but the bottom bracket could probably be higher relative to the seat. This can obviously be accomplished by shortening the adjustable tube, that is, swinging the bottom bracket upwards. I order to have a comfortable distance to the pedals the seat must then move backwards. There is some room for that if I play around with the seat post supporting the back of the seat. However, is this a problem? Does the distance from the head tube to the seat matter? The weight distribution moves a little but except from that?