I bought a s10 blazer that had a custom 305 motor swap in it, But the motor was real disqusting, so i got a rebuilt 305 installed, they used my old carb and alternator, everything else was replaced, i had no problems.. then my fan belt broke as i was driving, so i got it towed home and replaced the belt. Then the truck wouldn't turn over. I brought it back to the motor place, and he told me i needed to put a new carb on it, so i brought it home, swaped the intake manifold and carb. Now the truck will start when its cold, sometimes stalls, and when its hot it wont turn over. I don't know what to do.. any help?