I am with Al on this one.. esp given the rear pegs are set in from the cans !
I suspect we are being a little harsh here though and it is us who are not understanding the words as they are meant
I am guessing you mean the front pegs, was gonna type in rear sets ( or something similar ) and it all came out wrong ...
Hopefully the 6 +mm spacer will give him enough clearence, but do check the front springs aint sagged badly ( very common ! )
Quick rough guide ( very rough ) ..
Find someone with average sized hands.. get them to make a fist. With the thumb at the top and the little finger at the bottom see if the fist will slide between the front fender and the underside of the nose cone.
If it will not slide in just touching top and bottom then the springs are on the way out and that is why he is decking the thing out all the time..
Course, he could be a tart like me and replace the peg feelers with titanium ones.. showering folk in sparks is just SOOO much fun !