Steve many thanks for your reply.
Yes the all aircraft parts are visible in DX10, they were visible in DX9 before installation of the fixer, it is only when I switch back to DX9 that all I'm left with is the undercarriage, weapons and canopy. I'll try rebuilding the FSX.cfg this weekend and see if that helps. All other addons are working seamlessly! Any other suggestions would be great. I'll post some screenies once I'm back as well.