i like your positive approach

i think you're right that the instructions could have been better and clearer -- your first pictures of pinning looked good -- (tho i'm curious about how the "bruising" took place of the one you removed early on -- it seemed similar to some of those in the last picture?)

the forums of the kit suppliers often have good info re humidity and temperature -- i've noted what others have said here, and i won't argue with that, tho my practice is to try and maintain kits at a temperature of 25-27C throughout -- after the dunking, as long as there's some condensation on the sides of the bag i don't worry too much about drying out -- if i had no other way of keeping the kits warm i'd be ok about suspending the kit over a consistent medium heat source (such as a radiator) as long as it was resting on a couple of pieces of (eg) polystyrene foam acting as insulators (which don't directly conduct the heat) and as long as there was a thermometer under the kit to check the bottom temperature -- (the water in the bag also helps keep the temperature consistent)

anyway, good luck with the second flush, and keep us posted