Stephen;
Our local track has "issues" with posts coming out of the ground due to frost heave, so it needs work. My 2-8-2 also has difficulty on this track. I have taken Tich to two visiting tracks this year; Kingston Ontario, and Southwick, Mass. USA. Both times she/he has run very well; I use welsh steam coal, our club got 6-1/2 tons shipped to Canada a number of years ago. It has flown to Vancouver Island, and to Winnipeg for meets, and actually, was completed in The Netherlands, so has a dutch boiler certificate. (*) On the Winnipeg track, it pulled 2 of us; maybe 450 to 500 pounds load, but it is a flat, long track.
When I started my Tich, I knew NOTHING about machining. I, too, made mistakes; the second cylinder set certainly hurt my pocketbook. I made the slip eccentric valve gear, no brakes, large boilered version. The superheater flue plugged up first time I tried to steam it, so it has been blocked since day 1. It needs a re-paint, but it's going to stay as it is.
First few times I could not get any fire going. It takes some practice to realize that you have to have good coal, and to throw it on in teaspoon-fulls, and fill the firebox up quite full, as you want the fire to be open, but you want maximum heat via a thickish fire. I start with kerosene soaked charcoal; bits that fit through the firedoor, and stuffed as full as I can get it. Coal is thrown on well before the charcoal is burnt through. On the track, I throw on a teaspoon full once or twice per lap, depending on the track. I just literally throw it in – no placement plan like on a full sized loco.
I do know that after a few laps at a breakneck pace, I need to clean out and put in a new fire. Tich certainly moves, and I have been told to slow down more than once.
If you google "Waushakum Live Steamers" and look at their elevated track, my Tich is able to navigate this track one loop per steaming. You do need auxiliary water; my locomotive has a pipe going to a tee at the bottom of the axle pump which is connected (via plastic tube) to a larger tank on my riding car. One fill up of approximately a "coca cola can" full of water was good for one run of the PVLS track, the Waushakum Live Steamers, I had a squirt bottle (water bottle for kids sports) with me to backup the backup water supply!
The * above is because I was totally amazed at the dutch modellers. I had to return to Canada quickly, so did not get to really go around and say goodbye to a bunch of really nice people who were some of the best modellers I have ever seen, and who were appreciative and helpful with my finishing my Tich.