This is not quite the same, but I put 36mm Mikuni flat slides on my 86 750 GIXXER. I was told that they would fit. They did fit, but it was a major effort for them to pop on. I don't recall the size different. but I think maybe 1 to 2 mm. Lube carbs, heat the boots(new I hope) and some of my favorite cuss words and with the bike tied down. I would try just one carb and one boot to see if it could be forced on.
Steve.