OK, so I finally figured it out today. My problem was that I was starting off with my foot on the brake and then trying to figure out how to get it over to the accelerator. Instead, I put my right foot between the two, so that the left edge of my foot was on the brake, and the right edge above the accelerator. You can then push as hard as you want on the brake, and then when it goes right in, your foot is level with the accelerator and can easily roll onto it or move over to it. Still going to take a bit of practice, and it would be easier with a wider pedal, but at least I can do it now.
2006 PBM/M6/18s 1 of 1124
No mods (yet!)