Dlaery, the hook is not an oversize hook. It is the recommended 4/0 hook.
The pours that actually came out fine look perfect. The only problem is that there are too manky incomplete pours. I will try to heat up the hook before I pour the lead like Dink Master said to do. The only problem with that is that I do not currently own a heat gun to heat the hooks with. Will a lighter suffice to heat up the hooks enough?
Also I did heat up the mold, to the point where my arm accidentally touched it and I got burned. So the mold was relatively hot. That leaves me to believe that it is the hooks that are causing the problem.
Also I was wondering how to store the lead after it is melted. Do you leave it in the pot and let it harden? Or will that damage the pot?
One other thing was that when I put weedgaurds on the Jigs that actually poured well, the weedgaurd wasn't as firm as I would like it. Is there a way I can stiffen it? I have heard of putting a dab of superglue in the bristles and that can help stiffen it.
Thanks for the help above and I will try to apply your tips. Answers to the questions I just asked would be greatly appreciated as I am new to this and hope to start making many more jigs.