Thunderdome

Ok, just started this idea and smacked into a problem. Its a big arched circle forming a cyclinder of skafling. Yes, yes a cyclinder is not a dome, but the dome is much harder to make and runs slower - already tried that. I then made a second slightly smaller copy of the first. It has 32 faces each one was set up as a separate func_ladder. It works well for awhile then boom - it throws the player way into the sky and reports the following error: Got velocity too high 1. Got velocity too low 0. Help??