Quote:

there is a machined groove at the 0 mark. The timing cover has markings from about 0-20 BTC/ATC.

sucess!. You would want the machined groove on the harmonic dampener to be at the appropriate mark on the timing cover(& check your tune up manual & see where you want it) but 10BTDC would get you fairly close. If you are not pinging at any point in time no damage is being done.

live every 24 hour block of time like it's your last day on earth