Second attempt at shoulders went MUCH better. Will be doing several more apps of MicroSol to really get the last "crinkles" out of course.
Fixed the head striping---got lucky and my first attempt at slicing out super-thin super-parallel white stripes worked great. (the stripes are about 0.5-xacto-blades-thick)
Tailfin red parts: I painted the antenna spikes at the tips and along the top edge, but it still wasn't enough---decal's too small, edges all along the fin show a lot of black. (just like the ventral fin decals) Will touch up edges with paint after decaling. (I've got a perfect red paint match, it's just the black shows through even after like 6 coats) I'd have really liked white-molded fins--could paint/decal the red parts much easier, and just paint all the black---and would have had a white fin hinge area too.
Going to paint the big "crescent" of black on the chest, too. Didn't like how the decal fit.