I have used both a cougar and a centro shell on my B4 Vega, and the Centro fits well without at gear cover, but the cougar shell was impossible to fit without the spur touching the shell.
I have been looking for a solution to mount a gear cover so that I can trim the shell, but no luck so far.
here's the centro shell, and pardon the paint-job... Its my first attempt with an airbrush...
