Hi Ian, thanks for reply.
Yes, its not end float, the bearing is worn at the conrod end allowing the crankshaft to wobble sideways and up and down. I guess its been run lean at some time. Didnt notice till I put a prop on it but now its stripped down its easily seen. Its classed as a vintage engine now and spares are rare/unavailable. Gonna try Kent bearings, if I can get somewhere near it, I can machine it at school.
Cheers