@TimR3 I'm sorry to hear that you are having problems
I would advise you not to ride it until it has been repaired. From first hearing and feeling the 2nd gear noise/vibration, it only took a few miles before (in my case) 4th gear shattered. I was very lucky, as I was close to home and pulling upto a stop, if I had been on the motorway, it could have been fatal. @mr hunt had his gearbox jam up altogether
It feels so much better now, much smoother and quieter.
It's lasted 500 miles, so far, with the oil and filter changed yesterday
GOOD LUCK! Please let us know how you get on!