Hah! I couldn't wait for input from others, so i started with a small 1.5mm metal drill, grinding out the excess rubber. Then i used a needle to remove som rubber at the end, so that the springbar curved nicely and kept the rubber tight. Now i got 1 of the straps mounted, very tightly!
Working on the next one atm. Will post pictures when done, ITS AWESOME!!
Edit: HUGE SUCCES! Mounted, but MAN that took a loot of time!
Edit:
WAUW! So satisfied with the result! No more vanilla smell, when i walk into a room!
As of now, i'm having the strap cut so it sits a bit loose on the arm, due to i cut the replica strap a bit too tight for when i have a sweaty arm. Might cut it tighter in the future tho!
I'm very Pleased with the result, and thanks to Strap Daddy from RWI, for the gen strap!