I have the same thing on my R3T, dealer told me it was tire cupping, a common problem on heavy bikes. Makes sense, as new tires cure it for 1500 or 2000 miles, then it comes back.
I've been riding over 40 years, mostly triumphs, I've never had a bike that I couldn't lock the throttle and let go of the bars. You can even negotiate small turns on let's say a bonnie