gearbox failure
Guys,
What you are describing is a major, major problem with the R3. Ok mines an 08 purchase but made earlier, I got to 6000 klicks only and yep same symptoms, kicks out of 1st gear, then it kicks out of 2nd gear, all at the wrong time.
Nothing you have suggested will fix the problem, shuffling feet, doing banana skins transplants in the box instead of oil, hoping it will go away. IT WON"T
THE PROBLEM:
Triumph have a "KIT", you need to take your sick puppy back to where you got it and say hey guys, MY REAR OUTPUT SHAFT BEARING HAS FAILED. Yep this is the problem, the cage the bearing is in breaks up and puts metal in the oil, the same oil that feeds through your motor by the way. They say they have "the fix" but this is serious enough for me to say, thats it I'm going back to Banshee bashers.
Your repair bill will run to thousands unless you kick up a stink with the Triumph dealer, they are very sheepish (this is not a sheep joke) My home town is Adelaide South Australia. Triumph here know all about it, 1 in 3 are going but that figure is climbing daily.