Just noticed an ad on F'book for a bike belt(/chain) laser alignment tool. Trying to work out if that would help with the M3W belt alignment - probably yes for the alignment to the wheel, but wont help if the BB is out of alignment...
Advertised laser alignment tool working against the rear sprocket (hmmm would it fit with the flange in place?):
https://www.tru-tension.co.uk/product/laser-monkey-motorcycle/MTWC article referencing a standard builders alignment tool to place against the wheel...:
https://www.mtwc.co.uk/wp-content/uploads/2018/05/Bulletin_January_2018_PW_protected.pdf
