im just a little bit confused
It's not a Nordie isn't it?
I also replaced the originla ones by hex bolts.
I also had a short allen key before but it was way to much fiddling with those.
On the Nordie all thebolts are on teh outer side.
If i remember right the RC has 2 single rubber mounted to the head.
One bolt outside and one on the more inner side.
That might be even more fiddling, swearing, bloody knuckles.....