Thanks all. Got a bit more done and, as mentioned above, here's what I was dealing with on the lower cowl:
You can see a fair sized step under the last exhaust stub. This area actually curves back on itself and the moulded part didn't like that so there was actually a weird ledge that I had sanded away before gluing the cowl in place (sorry but I didn't take a before pic of that). There's a step near the wing root and also one at the front of the cowl.
Here's the fix:
The step at the root is actually smoothed over but what you see is that I opened up the seam with a razor saw as, once again, pics seem to indicate that there is a very large gap here on the real plane. The enlarged gap can also be seen below:
In the above pic, you can also see that I had to replace two of the PE strips in the wheel well with plastic as they had torn off during the dry-fitting of the wing to fuselage. It's a tight squeeze in there and I'm surprised nothing else tore loose.
In other news, I began preparing the radiator housing. I usually find the kit parts to be a little on the thick side so I try to thin the edges to look more like the sharp edges they should be. Below are before and after pics of the housing and flap.
That'll be it for today guys. I appreciate you stopping by for a look and for dropping a few nice comments and likes.