Hi billy, I
You have all my sympathy mate, i used to get the same problem of shiny pants etc, and now just use
Either a touch of Tamiya xf 86 clear mixed into the thinned paint on the palette, (thanks for that tip Housecarl),
it goes an extraordinarily long way!
Or Tamiya rattle can Matt v overall, just a light misting does the job, and then selective varnishes over metals etc.
Best of luck for round 2.
Paul