5.9 Magnum flywheel - DIY with bolt-on weight??

hello everyone I just put a 360 magnum in my Dakota and am having some balancing issues...

I'm running a 318 magnum flywheel with at the moment 1oz bolted on at 4.9" from center (I found holes drilled around the outer edge on opposite side of the flywheel, which to my math equaled .67 CI) I was aiming for 12.8" per oz.

I have tried a few different weights with not much change, 3.5oz @ 4.9'', 2,8oz @ 4.9'', 2.6oz @ 4.9''. they were all bolted on the same spot on the flywheel and im able to change the weights without pulling the motor!

when I bought the 360 mag it came with a flex plate that had a 3.5-3.7oz weight on it, I drilled the weight off and lined the flex plate up with the flywheel then bolted it on in the exact same location.

the worst vibration is when I take the weight completely off and I would say its best with the 1 oz weight, you cant feel any vibration above 1500rpm but at idle you can hear it and slightly feel it. motor has the correct harmonic balancer on it.

I'm really lost right now as I am not a rocket scientist lol I'm hoping someone can help me with finding the actual degrees from TDC where the weight needs to be and exactly how much weight I need!