Ant
I used the stock bolt for my DP rear sets brake lever.
Just used some emery paper to open out the hole a bit and polished the bolt, its not a lot of work but would be easier with a dremel and an emery paper attachment, and liberally greased it to get the bolt in with gentle abuse from a copper headed hammer and a bit of wood.
No problems with sticking either :P
It is just a bit tight to get the leading edge of the bolt through or it was on my 996 and again on mine and Jokers 998's then its a case of pressure to get it in there
.