For some reason the Fly plastic is very brittle. There's no give at all meaning some of their attempts at molding thin parts are tricky both to remove from the frame and to clean up. They need quite a bit of clean up. The larger parts, like the fuselage sides are fine and fit together well.
I agree about the resin, that's all nicely cast, I haven't had to fill any bubbles or anything. The wheel well requires a lot of filing/sanding to make it fit. Mine is currently so thin on top that it's translucent, and it still only just fits.
Likewise the P-E, it's just that some of the parts are so small, and the metal so thin, that attaching some of the parts is always going to be problematic. I've still got almost all of it into the cockpit using a 2.5x magnifier and what's left is mainly larger parts for the radiators, intakes etc. and should be no problem.
The weird thing is that for all that work on the Fly kit, there's a lot more in the
Revell cockpit, albeit all in plastic. Some of the Fly parts clearly look better. Their P-E/film sandwich for the instrument panel or P-E foot boards are much better than
Revell's plastic equivalents. It's why making direct comparisons is tricky, they are two very different kits.
One thing is certain, bearing in mind that I have only just started the
Revell kit, the Fly kit has presented more challenges...so far.