Wings are notorious for not fitting first time even Heritage. You will need to trim here and there and then use some brute force plus self tappers to align everything. Be patient thats the main thing.
You really do not want to go the route i did which was to extend the bonnet each side and along the front as well.
Thanks for the comment Sonikk. I looked through your build with admiration when I saw your bonnet extensions. It looks like it came out really well. I will have another look later at the wings. I'll try to get some self tappers in like you said and pull them to shape that way.. They only cost £25 each so it's not a major setback if they end up need replacing again. I'll try and clamp the a panels in place also.
Cheers, Joe