Chainsaw Repair

The spark should always occur after top dead center.    How much ATDC is determined by the manufacturer.   
They do not like to much advance because it can be hard to turn over.   

I have never seen a timing problem on a saw like you are talking about especially with two different coils.   If it were me I would start over and double check everything else you have done.

One of my test I like to do is to squirt some mix into the carb and then pull it over with no choke and wide open throttle.   after about 5 pulls if it does not fire at all then pull the plug and see if it is wet or if it is dry.  I do not use starter fluids on 2 cycle engines because there is no oil and the rings do need a small amount of oil to help seal for compression.

If the plug is wet then double check the spark.   Also double check the compression.   Blow the plug dry with compressed air and blow out the cylinder through the spark plug hole.   Pull the rope a couple of times and then blow it out some more.   Put the plug back in and pull it over again with wide open throttle no choke and see if it fires.   If it does not then check the plug again.

If the plug is dry then double check the crank case pressure because the fuel is not moving from the crankcase into the combustion chamber.   I would also double check the compression in this case also.
If you have fuel, compression, and spark it should fire.