Anyway i was looking for some gearbox mount plates and today, chanced across this tensioner device. About $17 US... and they're reputable. been doing business with them for years.

Says its only for Tiger 1 but, when they say that all that does is get the gears and wheels turning in my head how am I going to repurpose this thing...
"Mato metal adjustable track tensioner for Mato 1:16 1/16 Metal 1220 Tiger I tank"]
https://www.aliexpress.com/item/Mato-me ... 98a4&tpp=1