i just got a digital camera but havent even used it yet. Mine looks like a bridge. bolts to the pan rail holes. I bolt a harmonic bal puller to it and use that to push the caps down, To pull them out, i just use a threaded rod with a nut and washer, it works VERY well...sorry that i can put a pic up

It basically a pice of angle iron that spans the cap with a leg on each side that bolts to the pan rail. there is a hole drilled in the middle, When you thread a threaded rod into the cap, all you need is a washer and a nut on the rod , as you tighten it the cap just somes out so nice and easy. Like i say, i also bolt on my puller with two bolts, now to install a cap i put a small square of 1/4 alum to keep from galling the cap, then u just use the pullers shaft to push the cap down, again nice and easy. Just make sure to use a little oil so the cap doesnt gall on the sides going in and or out