Thanks Calum - I will jack it up & see how it goes. The belt has never overhung the edge of the sprocket, as shown in your excellent write up - in my experience anyway.
Hbats - thanks for your advice, do you remember the cost of the new hub?

Thanks
Andrew

Currently
2011 M3W
986 3.2S
Z4 M40i
Cectek Estoc
Midget 1275
1959 Frogeye Sprite
2022 Defender 90 HT