I was thinking there had to be a tool that could be used as a standard in our procedures of refilling cartos.I believed I found it, a 1.50mm crotheting needle $1 at walmart, it fits straight into the hole of the white cap (no need for prying, possibly stretching the cap), and the small hook of the needle, grabs the side of the cap and pull. Same goes for the inner bushing. I realize everybody has their own favorite little tool, but I found this to be so much better.(wanted to share this with my V4L peeps)