Scrambler Can You Adapt 10mm Aftermarket Turn Signals/indicators To Scrambler 1200

I picked up a set of aftermarket signals/indicators for my scrambler 1200 that mount with a 10mm threaded post and a nut. https://www.amazon.com/dp/B00T6JAIM...19&ie=UTF8&vehicleId=2&vehicleType=motorcycle. The problem is that the triumph signals pass through holes that are significantly smaller than 10mm. I realize I could drill them out, but I'd like to avoid that if possible. Has anyone mounted 10mm signals on their scrambler yet, and if so how did you do it?

Thanks.