if you damaged it with 5 seconds of operation, you did something really wrong. that just doesn't happen. i would go over it again, word for word to the local engine guru. about the evolution engines, yes, they are reliable. they say no break in period is necessary, but you should at least run 1-2 rich tanks through it.
i am not a personal fan of the evolution engines becasue of the engine setting limitations they have to help keep beginners from turning it way wrong and ruining it. they are good engines for the money