Flexplate Question

Finally got some time last night to try and start eliminating things that could cause vibration. I pulled the inspection plate on the 727 just to see how much I could learn about the flywheel and torque converter. My knowledge is pretty limited here but shouldn’t this be perfectly round? I don’t know what’s going on here with the white witness marks unless it was an attempt on balancing this thing? Any thoughts from those knowledgeable in this area the motor is a 360 LA so if I have read correctly from previous post the flywheel should be neutral and the torque converter balanced???



IMG_0329.JPG.jpg