And none of my local bearing factors can help.
The seal is a weird size 36.5 x 46 x 5. It would be interesting to see if a standard 32005 has an inner race of 36.5?
My guess is it is a Guzzi specific bearing so we're locked in to buying from them. As I said the price isn't too bad. About $60 AU from memory and if they are greased properly from time to time they are going to last a very long time. I've already spent more than enough time chasing this particular chimera. Just buy the factory bearings. It won't kill you.