DT can be very fickle stuff to use. I even had 2 completely different looking MkI batches of Coolangatta Gold that had me wondering if they were in fact the same colour? One was clear and translucent whilst the next batch was opaque and looked more like satay sauce.
That blotchy reaction happened a lot on my first couple of builds and reckon it is all down to weather conditions and lack of proper curing time allowed between coats. Also a big reason why I ended up using TO for top coats and continued using it on next 4 builds as it is so much more forgiving and easier to use with minimal "stuffing it up" risks attached. Might not be as environmentally friendly but neither is poly, nitro or acrylic.