I am after some ideas on how to stop light showing through lighted plastic structures.  

I am not sure whether to paint the inside of the building or fix card stock or something similar.

 I have reduced the intensity of the light but I am still getting that skeletal appearance.

Any suggestions would be appreciated.

Regards

Bernie

Here In Australia we have Agnew's Water Putty which is identical to the American product Durham's Water Putty.

The manufacturer recommends you mix it mix it three parts putty to one part water. I never measure exactly. Near enough seems to be good enough. It dries rock-hard and it can be sanded and sawn.

You can add acrylic paint to it as well, but in my experience doing so actually hastens the drying. The normal working time of 30 minutes is reduced significantly. This is contrary to what it says on the label, but I swear it's true.

I shot this video at the Amherst Train Show in West Springfield Ma at the Big E

http://youtu.be/cF9_7NI27QI

Can't see a problem with this but thought someone else might have some experience.

Is there any issue in mixing small-head HO Kadee couplers like the #58 with the standard size #5 and variations? The thought is to put scale-size on locomotives and cabooses, and use my large stock of #5 couplers on general rolling stock. The small heads look nicer in photos (except for the giant coil spring) but the rolling stock is meant for an operating railroad. 

Trackwork is pretty decent and the grade transitions are very gradual.

Joe in Portland