If the crank timing mark is in a position after TDC - that means it's out by a tooth (?). Try dialling the crank to TDC and see there the cam timing mark ends up. My guess is it will show it being before the casting pointer on the cam mark.

If the original coil is still being used I would think about replacing it. Make sure the coil is compatible with your ignition system. The coil or the ECM could fail if they are not designed to work with each other. Transformer type coils like the one in your link or a Bosch unit work really well.