I've been working on a little project to improve tube inflation, and I've finally got it. The rubber tip on our air chuck is too small for the large inflation receiver, so we've had to wrap electrical tape around it, to fatten it up for a better fit. It worked ok, but never got a good seal for fast inflation.

So I gave one of the removable tube receivers to Daniel and he found a rubber tip that matched perfectly, except the inner hole was too big for the insert.

Mike at True Value hooked us up today, with three adaptors, and it's perfect. I'll wait until Daniel gets home to show me the proper way to connect them together with thread tape.