Hi, new to the forum and i need some help . I am repairing a friends Husky 254xp but the cast-in key has sheared off. I've trawled the web in the UK where i live and found a secondhand one but this is off a 154se and does not fit properly to my annoyance

as the company i bought it from said it would fit

. Can anyone help me get the right one i need or is there a compatible one off any other make/model that will fit or am i going to have to bite the bullet and buy a new one at around £125. Your help gladly received. Flywheel p/n 5035294-01 , model 254xp, year 1997.
Many thanks
Jim