Got a 1991 K2500 with a 6.2, fuel screw was turned up by previous owner, turned it down just a hair, then put everything back together. Cranked to get any air out of the fuel then let it sit a little. Went to crank again now there's just a click when I turn the key. Starter is brand new from NAPA, wasn't cranking on it very long beforehand (10s at a time maybe?), is my started bunged up or did I somehow lock up the motor?