RE: VRC BigBore Pipe Users
I didnt use that kit.
I used my own, the studs are a long set screw with a 3mm Allen head end. Same as the kit most likley.
Use a 3mm Allen wrench and locktight them in, put on header and I use one nylon nut and a 8mm wrench to tighten the nut on.
Once done.. never a problem.