I believe the issue is with the headlight itself. I tried the Xeon bulbs, but it is not really the brightness that is the problem.
Triumph has to follow DOT guidelines that requires the headlight to illuminate areas to the sides. I replaced my headlight lens/bulb with an aftermarket and it makes all the difference in the world. The beam is more like a spot than a flood. I also have the aux light bar installed to illuminate a wider path if needed.
I had the same problems with my other bikes too... Replacing the headlight lens/bulb with an aftermarket is the answer.
Please tell me what type lens did you use ? Have looked at several and can't decide what would be better.