Ok so i just rebuilt my Top End has great compression (Have not done compression test yet) but seems to be good ok so hear is where the problem comes in i kicked it about 10-15 times then it started for about 20 seconds then cut off then i tried to start it again but no luck i kicked it probably 40 times has brand new spark plug (NGK B8ES) top end was done right so no issues there i have not done a Leak Down Test i plan on ordering one from slickerthanyou ASAP please help me it was mentioned to me that it could be a timing issue how can i tell if it is.