tape didnt last long ive cut abit of inner tube and put it under the clamp and now i can assure everyone it is solid, the issue is the clamp isnt pressing all the way around the seat tube but the rubber has sorted that, ive also just ordered some park tools assembly compound, as it is supposed to be by far the grittiest and strongest, i dont want to risk it dropping down with my weight when riding or over tightening the bolts, the paste is known to cause abrasion to the post but its something im willing to do as once it is set it wont be moved! hopefully i can source a new clamp at a later date