Engine timing mechanical

Solved
Thank you for all the help and no negativity
I brought #1 up on the comp stroke and got exact TDC with a probe cam
Pulled cap and rotor was on #1 . Damper marks and Timing tab were off
The bolt-on timing tab on the timing chain cover is not accurate , 0 is off by 15 degrees . It bolts on in one position only so I assumed it was correct .
I was setting my initial at aprox 0 and total at 3000 rpm to 20 deg. Ran like a 2 legged dog
Now it is at 14 intial and 34 total with the correct timing marks
Gets up and goes !
Takes care of my other problem , she was running hot on the highway
I just put a 4 core Holley radiator in it , what a beautiful piece. Holley does it right !
Firiing after TDC will make it run hot i believe