I know the dots have to line up on the balance shaft to the primary gear. Does it have to be a tac or bdc? Still fighting smoking like no other everything been resealed other then splitting the case. I’m have air coming out of the vent tube when I do a leak down test. So what’s y’alls opinion? Really don’t want to tear it all apart and sink more money in it but will if I have to. I have to get it right or I’ll feel defeated and no engine has beat me yet. I’m determined to fix it.