I don't recall mention of the J70 yet? My Toby was built around 1965, as my first ever kit. Totally vanilla K's, apart from some brass buffers fitted later when I lost 1 of the originals. An absolute dream runner, slow, smooth, no pick-up problems despite its short wheelbase (weight maybe a factor?). A tad noisy on my pwm feedback controller, but that adds to its charm, and tbh is ok at slow speeds.
A little while back it was sitting on the shelf over the computor desk, and got knocked to the floor by the cat. Almost went back to component parts, and most bent at that! The pics I enclose show it as pretty quickly re-assembled, with a little work to redo. I'm loathe to repaint it though. The whitemetal cow-catchers have suffered, along with the loss of the Traing coupling at one end. However, a fellow RMWeb member has etched me some nice brass ones which I still have to fit, and I will be adding simple brass wire loops to work with Spratt & Winkle couplings.
Toby lives on.
Stewart