I do like Academy models, but I agree the decals are very poor, I use Klear to stick them down to hold in place then I use my own mix to soften, and so far have had good results, my own brew softner is:
70% Clear acetone (not nail varnish remover)
20% De-Ionised water
10% Iso
This mix cant be brushed on, just use an eye dropper to place one drop in the middle, then a cocktail stick to spread over the decal, then I leave for 5 mins and then absorb the rest with a tissue, then let it dry overnight.
I mix it in 100ml portions, but as always with other peoples home brews try it on a scrap model first.