A quick build update for anyone else who may have a little fit issue. Did a few adjustments - not all may be needed, but it seems to work for me.
Main issue was the front section between the engine and cockpit could not close up well. I had a long session with a lot of dry fitting.
Drilling out the locating holes a little solved the fuselage not going together easily.

One section of the forward bulkhead(?) sorry don't know the right term for it..
But anyways its almost 1mm wider than the pre made fuselage cut out.

I took a chisel and made more room. Make sure also to deepen the original cutout at the top - it needs that extra room.

Bottom of the cockpit gets pushed up a bit by the fuselage bottom piece(the one with the bottom wings).
I cut 1mm of the from bulkhead(?) at the bottom.

The fit is much better now and clicks together well.
Only when the bottom piece gets added the fit moves a little again. I have not found this last "sticking" point yet and om not willing to thin the fuselage any more at this point.
I will add a small 0,5mm piece of plastic card and call it good.
Note the adjustments may look a bit rough here, but i'll clean them up a bit and honestly it's in places you won't see after you close the cockpit.
