Nothing should blow by or through the crank seal.  A teaspoon of goo is not going to keep the engine from starting.  A teaspoon of fuel on a cold engine will make it start instantly.  A teaspoon of fuel on a hot engine will flood it and may take 5 kicks to clear the flood before it will start. 

If you take a jar 1/2 full of oil or grease and finish filling with starting fluid or something like acetone, after the starting fluid or acetone evaporates you will still have half a jar of oil or grease.

Everything in the lower end should be coated with a very light layer of oil.  If there is a heavy layer of oil coating everything in the lower end, it will not keep it from kick starting if the correct amount of fuel vapors are present in the crankcase.  If there is a few ounces or more or oil in the crankcase area and you are spinning the engine over rapidly like when you are pull starting it, you make pump enough oil from the crankcase to coat the spark plug and prevent it from starting.  Looking at the spark plug will instantly reveal if this has occurred. 

An engine needs 3 things to run.  A minimum amount of compression,  the proper amount of fuel, and spark at the right time.  On a cold engine a very rich mixture is best.  It is hard to flood a cold two stroke as long as there is not an ounce or more of raw fuel in the crank case.  If you have 75 psi compression an engine, it will run.  If the spark is plus or minus 15 degrees of where it should be, it will run.  If you cannot get your engine to start something is a mile off in one or more of these three basic requirements.