" I know timing is a big deal but as long as you are on TDC, and roll it back to 10BTDC, then ensure your dist. cap is facing cylinder 1"
You want your distributor rotor at the number 1 cylinder at TDC on the compression stroke, not 10♀BTDC. Then time it with a light to 10♀ BTDC or per the specs.
Hope you get it figured out quick.