I have the Firing Line Lightweight too, and it's a frustratingly annoying model... the tilt doesn't fit, the windscreen was so fragile that I have to make a new one, and the wheels are terrible.
Like you I have around a half dozen Rovers in various stages of progress, and have also made a couple of 88s. One was built before the Italeri reissue of the series 3 and is a series 2 with scratchbuilt rear wings and cut down Italeri canopy (recent addition).
The other is a civvy 88 with a cab built using the Italeri kit and the Azimut conversion set.