Look no further, Hastings to Tonbride v2.00 has arrived and is much improved: https://backdatedtrainsim.weebly.com/the-1066-line.html
The title confused me - 3rd Rail Dc Thumper Action? Two different things - 3rd Rail Dc Emus and a Thumper is a Diesel that does not need 3rd Rail
It's a great route, had a nice run with the 411s - many thanks to the author for updating it and providing it free, its terrific