[cobragene]

I have a 428 with an edel RPM manifold and have my brake booster connected in the port on #5 cylinder, that spark plug is always and little whiter than the rest of plugs, might I benefit from drilling and tapping the 1” carb spacer on the primary side for the booster? I have about 12” of vac at idle, canister with check valve, could use a little more brake boost.