Guys, hoping you can help. Please see photo, the throttle bodies never quite return to normal idle, even with the throttle cable removed. I have oiled all the moving parts, springs etc but still it never quite returns to normal idle! Super annoying as I am so close to final tuning with the Carbtune. Really grateful if anyone has any ideas please!

Check the clips on the rubbers are not interfering with the mechanism being able to return. I did have that happen and ended up with high idle.

You can lift it up and feel for what's happening, look at each one as its easy to have something interfere with it. This one is important. Also check th the tend where the throttle position sensor is located.

Also check its all well lubed. [You have done this]

Second place is to look at the handlebar chain mechanism, may need clean and lube and a stiff throttle can be a sign. [cable disconnected and still happening puts this off the list for now]

You are a genius!!! You got it it was the throttle position sensor. As soon as I loosened the 2 screws the whole throttle assembly freed right up!!! Do I need this sensor?

Some people eliminate the TPS and report having smoother engine deceleration characteristics. It does perform a useful function for the FI system so I'd recommend leaving it in place. Just make sure it is adjusted properly.

- The TPS should click just off idle
- the TPS has to be aligned precisely with the TB shaft. Yours wasn't. Once you get the off-idle adjustment correct, shift the TPS side to side to ensure it is aligned.

Thanks guys. It almost feels like the brass shaft is slightly too long because the sensor doesn't fit 100% flush, could this be possible?

Highly improbable, but there could be something inside the hole for the shaft that is preventing it from being fully seated.  Inspect the TPS and look for any obstruction.  If none, then install and adjust the TPS. Tighten the screws holding it to the TBs and test the throttle.  If it continues to be sticky, then maybe shim out the TPS with washers.