I've throughly explored the lava room and control room. Drained the lava, returned the lava. Moved the gear rod to the left and back again. But I cannot now avtivate the lever in the control room. It will not complete its swing. I've tried all combinations of clicks and moves for up to a very long half hour over several days. This must be the worst user interface I've met in an otherwise superb series of games.
1. is there any work around for this please?
2. now that I've understood (I think ) the series of moves necessary to get the hot air to the ship, given that I can overcome the problem at 1. in which room, lava/control, is the fan control please?