You may want to consider what your tire bill will look like in the future should you decide to follow through with your current thought process.
I don't have the R3T but can tell you that the Rocket Classic likes to wear out the rear tire should the rider show a lack of discipline with the right wrist. I go through a rear tire every 7500 miles and I am tame in my riding style as opposed to others I know.
I'm doing OK with the right wrist discipline. I have 6200 miles on her now and I have quite a bit of front and back tire left. Most of my miles are highway, so the hard starts vs miles ratio is low. Hopefully I can go one year between tire changes!
RatBoy is correct. There's nothing the Triumph mechanic can do with the tool except load stock tunes, none of which will compensate for removing the secondaries.