I had a Throttlemeister on my old bike and used it a lot on long trips. I'd like to put one on my 2010 Xciting 500Ri but I do not know what model of Throttlemeister fits my current bike. Has anyone installed the Throttlemeister on their bike? If so, what model did you buy? If you don't know that, what is the size of the handlebar? I'd need to start with that. Is it a 1" or smaller? Thanks for any info.