Decals - easy. I admit it - I have never glazed Diesel windows. I have done about three quarters of my passenger cars, including one dome car. Actually, I have some really good screening material for the side windows, but low incentive. Lucky to get handrails and stirrup steps on most. Not sure why; my steamers get all the handrails, including those on the back of the cab and above the cab windows. Might be a problem in some synapse connections located on or near the OCD headquarters.
Here is Jack's E7. Might be the finest sand cast E7 ever done - if my foundry ever pours bronze, I will surpass it, but that will be with the help of Scott's E7 sides and Jim's Keil Line window frames. My artistry will extend only to the soldering.