Just about 4 hours ago I went to a heck of a lot of trouble to make the front windows of my new Athearn F unit look at least like an F unit. I used modelling putty (two part epoxy putty "green stuff") and I'm pleased with the result, as it cost me nothing and it's a vast improvement on the apperance of the model. I've also done some sanding, smoothed some things down, thinned down the step ladders to prototype thickness, and cut off the representational "lift rings" which were just blobs of plastic. But as I was doing this, I was wondering what am I going to do with the rest of the model in terms of detail? I plan to model a CR f unit, the story being that it's an ex CR unit sold to a shortline (that's my excuse for running an F unit, every modeller has one). I hear that the walthers f unit dress up kit is very good, but are there any additional details I could add? Does the walthers kit include grab irons or will I have to add those seperately? Also, what are the inaccuracies on the athearn model, just so I know what I can improve to make it better?