72 360 first start question

"BTW, for that cam it has 4 degrees ground-in advance, and is a symmetrical cam. So, at equal lift at intake and exhaust, the damper zero mark (slit) should line up at 4 degrees BTDC."

so if I'm at 10 deg. BTDC with my actual TDC mak and this cam should line up at 4 deg BTDC does that mean that my cam is actually sitting with 6 deg. initial advance?