SHIFTING DOWN ON ITS OWN

[Moff2300]

Hi, new to this site and hoping to find some guidance.

I own a 2013 rocket 3 roadster. My dad bought it new and I have since bought it from him 2 years ago.
The bike has been flawless, never had a issue. Its just hit 21K

When shifting from 4th to 5th it would sometimes miss. It felt like it was in and I would throttle on but it was not in 4th nor 5th and would sometimes grind a little.

Recently when in 3rd 4th and 5th when i throttle on (not hard) it will jump down a gear and in doing so naturally surge forward!! I do also have a little trouble finding neutral. The gears themselves move nice. No clunking or alarming noises but when power is applied in those gears it will jump down the box!

I have stripped the front cover off and also removed my clutch. Unfortunately the detent spring is still intact which I was hoping was the issue.

The bike has been regularly serviced including a dealer 20K service. Missing 5th gear and having a little trouble with neutral has been for a while now but the jumping down of gears has been very recent.

Any ideas what this could be? Very much appreciate any help.

**UPDATE**

I was put on to a rocket 3 specialist. Just Rockets, owned and ran by a bloke called Carl. I told him the issues I was having and he knew what it was straight away. He himself has done 40+ Rockets with the same problems.
Triumph won't admit their is a fault but will sell you an uprated repair kit!! This is the txt he sent me when the work was complete.

Hi bud,
Just a brief description of what we did to your bike.

Removed and stripped the engine. Replaced 1st, 4th & 5th gears on the output shaft.

The problem was the dogs on the 4th gear had worn and was knocking it out of gear and throwing it back in to 3rd.
Also replaced 4th gear selector as it was well worn and bent.

You will see on the old 4th gear where the damage is.

Cheers mate.

I have also attached the job sheets with Carl's details on

 

[Tripps]

Man, that's a pretty fair price for that much work.

 

[Moff2300]

Man, that's a pretty fair price for that much work.

When I first spoke to Carl he told me he loved his rocked and he actually started to specialise in Rocket repairs/maintenance becasuse he was sick of being rippeded off by triumph!! Genuine bloke who loves Rockets and gives a fair price
My bike is running sweet!