Lee is one of the best scratch builders in the hobby. Indeed, it was his Tiger 1 back in the early 2000's with a full interior that first showed what could be achieved.
Nowadays he eschews store bought kits and builds an entire project from scratch. After moving to Canada he did not have a dedicated room for modelling, and so built his 1/35 T28 on a TV tray on the sofa. With one or two exceptions ALL of the parts are scratch built, including the wheels and cast rubber tires.
How good is this work? The idler adjustments actually work!