Hi I upgraded my mk2 to m3 plenum and when i was going to screw there c1 i was able to screw it in to 5mm by hand and when it was at 6 to 6.5mm it was really loose. When I had the mk2 plenum I had the c1 at 6.2mm, so now i took loctit and set it at the same distance. anyone who had c1 as...