I understand that there is an issue with the Cardon Shaft on these models that could require more frequent maintenance due to a manufacturing error. If you aren’t aware, there appears to be a lot of info on the internet, , is an example. Andy
My shaft, fnarrr fnarrr, was replaced last year FOC as my mileage was 50,000. We all got a letter stating a new one will be fitted every 60,000 kms. Regardless of how many owners it’s had. It’s now a serviceable item. Mines a 13 plate GS1200.
I was aware and received my letter last year. I saw an article that bikes that had been used regularly off road were more affected , but how true that is is hard to say.