Hi hogweed,
Here's something I hope might save folk some grief. When resetting the the ISCV the Triumph manual tells you to turn in the nut on the end of the stepper motor's threaded shaft until there is a 0.050" clearance between the 'paddle' of the stepper motor and the roller bearing / lever on which it bears, which is itself connected to the shaft that runs all the way through the injector bodies. That shaft has the primary TPS at one end and the secondary TPS at the other. The reason they tell you to get that clearance is so that the stepper motor is not pushing on the linkage which rotates that shaft, - which would give you a false reading when you try to set the primary TPS voltage.
Now, on my 2009 R111 standard it's almost impossible to get any gap, never mind 0.050" because the spring on the stepper motor shaft binds before any gap is achieved. When the spring binds there is a good chance that the little plastic triangular piece that is located on the end of the motor's threaded shaft, and is pushed by the spring onto the throttle bodies' shaft actuating lever, will break. DAMHIK. You can't buy that piece on its own - you have to buy the whole stepper motor.
If you find that you can't get a gap without the spring starting to bind you can remove the nut, washers (2), triangular plastic piece and the spring from the stepper motor shaft and simply flip the 'paddle' out of the way. When you turn on the ignition the stepper motor will frantically try to find its correct position, but you can stop it trying by simply pushing the bar that the stepper motor normally pushes, a little clockwise (as seen looking from the front to rear of the bike).
Hope this helps.
Mark