C- Notch Istall

[legotech7]

I am underway in my C-notch install, and am having a bit of trouble, maybe some can steer me in right direction. I am using a CPP, notch kit and am trying to remove some of the rivets at certain points.In particular where the coil mount to on the underside. This is where you mount the c-notch using two bolts. But for the hell of me I can't get the rivets to pop out. I used a cut off wheel to get the heads off than with an air hammer, tried to punch them out! NO DEAL... They just wont pop out. Anyone have any Ideas as how I can get these damn things out? Will I need to drill them out? That might add time to this project... What to do folks.... Any help would be much appreciated...

Thank you

Here is the location I'm talking about....Bottom pic, too blurry..sorry.....