wow altering meshes is hard when you have little idea what you are doing.
for example doing a boolean cut does really horrible things to the mesh,
figured it out in the end, add vertice and edges, then delete polys, result pretty good hole after a bit of adjustment, got the con decks done,
have to rebuild the ct now, can`t delete a mesh subset without screwing the file
It will be the last build though, everything is in place and working in the last version, just needed a hole for the hatch.
no pics (you should all know what a hole looks like

)