Polwart I think you right, Im reluctant to send it for repair as the costs may very well come to or at least close to a new one!
Channel Ribs, steel Developments looks like a good company, Ive emailed them with my requirements ( new prop) so will wait and see what they come back with. The website reckons a new prop is £88 including vat and delivery so not bad at all.
Thanks for the guidance guys, I might have a chance to pop down during the week just to test the old prop but a new one definitely seems the way to go