Want my engine to start for Christmas

Are you pulling a plug, hooking it up to the plug wire, and watching the spark across the plug gap? If so, that is in no way, shape, or form a valid test. It takes many times more spark voltage to jump that small plug gap in a compressed fuel air mixture than in open air. So you can observe a weak spark across a plug gap in open air that will never fire a cylinder in actual operation.

So if this is the test you are doing, then you don't yet know anything about if you have a good spark or not.