Frustration! My tripot failed me last night at DC. I had to hold it by hand so a lot of my pictures may fail.... The level handle's thread got stripped, so I couldn't tighten it and it just tips over when I put my camera on. Anyways, I am looking for a tripot that has pretty good stability because I have a 70~300 lens and with my old tripot, sometimes it slips off. Another thing is whenever I use a tripot, I am on the move, most likely walking( 7 miles in Chicago and 8 miles in DC last night). So with my other equipment, it's going to get real heavy. I like my current one because it's light weight( also contributes to its failure last night), and it's really easy to setup. So what would you suggest? Any specific brand or model? I can possibily try to fix my tripot, but it will take quite some time to fabricate some parts.