Trying to run a steam engine in a session in Settle and Carlisle that involves running at high speed ( 70 mph). The steam pressure keeps dropping and it is a chore to keep it up around 150 psi, and sometimes it drops to the point where the loco stops. The coal level is good ( keeping it around 100%) , running cutoff at about 33%, and lucky to hit 35 mph. This session is in cab mode only, and what I am not sure about is how to set the water lever in cab mode. It says that the water is 100%, which I don't think is where it should be, but putting the water lever all the way down or all the way up doesn't seem to make any difference. This steam engine thing is new to me, so I am probably doing something wrong, but I read the manual and can't figure out what.