Star SA80 double feeding

[Badkarma81]

Hi all

Recently purchased a 2nd hand Star SA80 which was told ran brilliantly...used for the first time on sunday to find its double feeding, motor appears to lock up on occassion and virtually no range. Im trying to source components to replace piston/head, tappet plate, air nozzle and hop sleeve but having trouble finding places with them in stock (pm if anyone knows anywhere)

Any help would be appreciated

Thank you