One of the reasons why Glenn may not have been able to find a place to run this locomotive is because it is not well suited for excursion service. Unlike the 2-10-4's of the C&O and the PRR, which were designed to be high-speed freight engines, the B&LE 2-10-4s were drag freight engines with a basic design stemming from the 1920s.
The B&LE Texas types had relatively small 64" diameter drivers. I would be willing to bet that the 643 has never been run faster than 35 mph in her entire operating career. A 10-drivered engine with only 64" diameter drivers has some serious counterbalance issues at high speeds. To achieve high speeds, the C&O and PRR engines had 69" drivers, but even they had some rough-riding characteristics at 50 mph. The B&LE didn't need high speeds from these locomotives, they needed lots of tractive effort at low speeds. They got just that with these engines, which were rated at 96,700 pounds of TE.
Unfortunately I don't see much of a future for this locomotive. It is too big, too heavy, and too ponderous to be a good candidate for excursion service. Class 1 railroads won't run it because it can't run fast enough to keep up with other traffic. Short lines, regional railroads and tourist lines don't want it on their lines because it's too big, too heavy and would be too hard on the track. The opportunity to get it to the Age of Steam Roundhouse went by the wayside when Jerry Jacobson passed away and the switch was removed.
As I said in an earlier post, without a LOT of money from someone who is willing and able to pay CSX to cut the main line track and move it over or temporarily put the switch back in so they can get it out of where it is by rail, this locomotive is destined to be one BIG orphan.