Am I the only one having trouble with the Hooker Headers FFR is providing? The original shipped set contained the drivers side 351 W header flange on the #8 exhaust that was machined on an angle causing two leaks! Very frustrating cause at first we thought valve/lifter noise! FFR sent a replacement header, but it was a roadster, 4 into 1! Next header shipped has the identical flange machining problem! Now FFR says they don't use that vendor anymore and they want to send a thicker gasket to solve the problem! Any suggestions/ opinions!