The cap is rated 12-16 lbs. Its back together now. I used the right stuff gasket maker on both sides of the gasket, also put it on the bolts. The brass adapter/spacer seemed like it was pushed in to far and that it may have not been seated all the way in to the water pump snout, so i shimmed it out till it sat flush on the snout, and bolted on the fan. Hopefully, that was it. I will let everybody know if it worked. Thanks for all your help!