Thanks Tom, Spiros, John, Erik. I very much appreciate the attitude of everyone here in regards to what this site is all about. Its very refreshing compared to other places on the web. I appreciate the mixture of encouragement and critique without getting nasty or overally critical. Along with a few other things , this drove me from the hobby previously a decade ago.
As regards the build, I have decided that regardless of the fact that these aircraft had not seen combat or even extensive service use, I am going to build mine as a war veteran. I am doing this because I want to experiment with black finishes. So there's no worry about a glossy black P-38. Hopefully what I will get is something more like the P-61s, and night bombers of the RAF. A weathered multi-toned black finish. I'm mulling over a fictitious nose art as well so that I can experiment with a new Silhouette Portrait 3 making masks.
The Hobby Boss kit has mostly been without drama. It goes together well, fit is mostly good although the seams along the sides of the booms and nose will need a bit of filler. Perhaps with just a bit more care, the seams would line up just right, but as is, I had a very small amount of stepping that had to be taken care of.
Something else I wanted to touch on. I've had good luck using small amounts of Cyanoacrylate glue and zip kicker accelerator for small repairs. If the area is small and the accelerator is used and then clean up is performed within a short period afterwards, the CA sands out nicely. Not too hard. If you let it fully cure, then it becomes a chore to sand, but for quick fill ins of small areas, it's great.
For areas where there are seams and you either don't want to putty and sand or you want to maintain detail, Mr Surfacer 500 allowed to dry and cleaned up with alcohol and a cotton swab works great. I plan on using this approach for the boom radiator housings.
This photo of the rudder seam above the horizontal stabilizer is one of those areas treated in this fashion. The vertical stabilizer parts slide in from the rear on this kit and there is a bit of a gap, but after using the Mr Surfacer on it, it looks like a molded panel line.