Troy TRX Extreme gas block clearance

[Tulsot]

Are there clearance issues with this forend using a shaved fsb and placing the rail sections at 6 o'clock directly under the fsb? It is a .750gas block.

Thanks.

[Surf]

I have done several and they have all fit.

Here is one of them. The 4" rail runs directly under the shaved FSP with bayo lug and swivel ears removed.
http://www.youtube.com/watch?v=I5rPPyYdFUs