I use the Brunhilde MTL RTA and I get great flavour from it, really nice.
I can't see what's wrong with your build, and I find it fairly forgiving generally too. Coil position is pretty much what I have. I may be wrong, but I wouldn't have thought the type of coil would make THAT much difference, as long as it's heating up enough to vaporise the juice in sufficient quantity. FWIW I use a 1.2ohm kanthal coil at about 14w normally 7 wraps of 27/8 awg or thereabouts.
Hope you get it working, I think it's worth persisting with.
thanks very much for your post mate, yeah I’m sure there’s something I’m not quite getting as I am new to building coils and things, a quick question what wattage did you vape the stock 0.8 coils that came with it at? That’s if you did use them of course