Leaking oil at the crank!

Well my timing cover gasket went out so i had my buddy <LS1 guy> put it in. I was working onthe fuel tank,pump,lines, etc.. in the back of the car. Well we finished, started the car and leaked from every point were the bolts went in. He didn't use gasket maker with the stock gaskets.

So pisses off as hell i took off the blower AGAIN, got new gaskets and did it. Wellllllllllllllll I forgot to change the crank seal that goes in the timing cover. I think it seals when it warms up. Well i'm trying to be a cheap ass here and was wondering if stop leak from Lucas would work?

If i were to use it should i take the feed of the blower and just let it run for a few minutes then hook up the blower feed line. What do you guys think?

Not the crank seal! Just the gasket infront of the oil pan. BTW the lucas thing didn't work. O well dropping the pan tomorrow. Damn.....