scooby,dlm.

i got myself a afterburner back box,had it fitted,all ok sounded great.so i thought i would get the atfterburner mid section,got it fitted,but the end that fits to the engine end with the springs,its not an even fit,(chance of it blowing!)scoobyworld sent me another one from a diffarent supplier,but the fit was even worse!!you could see the gasket!!so iv:e put the 1st one back on.
anyone out there with any ideas??