Hi, I recently converted a bachmann HO shay to Kadee #158 wisker couplers.The problem is the coupler pocket is too shallow and the centre protusion is to large for the hole in the coupler.I was able to file the coupler shank thinner and bore out the centre hole in the coupler just a hair and it works great,BUT because the coupler is metal and the shay is a split frame, you could have a short. the shay comes with plastic couplers. so I would like convert my shay so the couplers would be insulated from the frame. the only way I can see to do this, is to remove existing coupler box by filing it off and mounting Kadee plastic coupler box. I was wondering if you have any suggestions.
Thanks
http://www.kadee.com/conv/hocc14.htm
You should be using the #148 wisker coupler, or the #5 or #58