Anders,
Beautifully done figure, like the other guys I'm eager to see him painted up especially the plaid.
I don't know if it will be helpful to you or not but; I don't mix MS and GS separately anymore having found in a fit of hurry that they cure fine when mixed together. The mix I prefer, though I'm not very precise about the proportions is more like; 30% GS to 70% MS with these differences; ~25% blue to 75% yellow, MS being something like 40% hardener to 60% resin. Though I like the additional rubbery consistency the GS adds to the mix I find that not a lot is needed to stiffen up the MS so I usually don't change the basic blend much from that stated.
Ray