Cut and grind smooth.............Or spend a few $$$..........I think VOXhonda or someone else on the board may be of help.
cut and grind will leave you with four gaping holes in the triple clamp, so beware, you might not like the result. I left it as is in my racer, couldnt see the point in weakening the casting for 50 grams less weight or a supposedly "cleaner" look (way messier looking IMHO).
BTW, you might get better response to your question by posting it in the regular or the projects forums where everybody sees it. its not exactly a high performance question (and soon Sam will be on your tail....)
TG