Well, today i dremeled them and i believe it worked very well. But what i noticed is that the metal is VERY hard and it takes a good bit of time on each groove to make sure they are reasonably deep. At first i didn't make them deep enough and had to go over them again. I ended up with very little of the original surface area untouched so that it was very toothy for lask of a better term. To put it simply, i really had to chew the surface up a lot. I did try and do a sort of spline pattern, but it's impossible to get it accurate so i just did the best i could. I used a fiberglass cut-off wheel, and after doing the adapters i had to take the wheel to some hard metal objects for a few minutes to wear the wheel down so it would fit inside the female side in the peg. I can't imagine doing this with a chisel or other hand method because the degree to which it needs to be gouged would take hours to get anthing close at best.
In any case, i haven't got them on the bike yet. But after just tightening them lightly by hand (usually put them on the bike and use a vise grip on the allen to really torque it down super tight) i couldn't move them even using the stirrup extended to hold onto for leverage and a screwdriver thru the adapter to try to turn it. Couldn't do it with all my strength. So i figure once they're tightened on the bike AND with locktite they should impossible to turn.
