i forgot to mention, this was the first time (in 17 years) I readly needed my revy loader while playing pump ... My indian springs maxiloader XL could not keep up. It needed shaking 4-5 per hopper full.
pump: check out the rubber oring in this pic:
works great so far w/ your lever - a bit cleaner than scotch tape. I dont know where to get them - found a few in my kid's erector set.