I hope there is someone out there who can help a very frustrated fellow live steam enthusiast!
I have a 50 year old 3.5 inch LBSC Maisie. When I first steamed her up I found that when opening the regulator all the steam went up the chimney. So I stripped down both cylinders, lapped in the valves and ran each side independently using air.Then i ran both sides together using 50lb of air, making sure that no air went up the chimney in mid-gear.
When I re-steamed her, she held steam on mid-gear for a short while but it wasn't long before all the steam went up the chimney again and the loco went nowhere.
Could anybody please advise me as to the next step I need to take. I have set myself a task to get this loco running again so that the 92year old whom I bought it from could see it running once more. Needless to say time is of the escence.