Hey guys, need some help. I recently found out that my 94 f150's radiator drain plug was loose. Tried to put back but seems like it doesnt fit properly (looks like right size and all but allways falls out). Seems to me like a piece of the drain plug broke off and now when I put finger in drain hole that just it a hole so I 've tried new drain plugs and seems like I might have broke a piece that treads the drain plug on. I've tried using Automotive GOOP (glue) to hold plug in. And after 24 hrs of sitting poored antifreeze in and looks ok but start the motor and pressure just must be to much and starts to leak again. Anyways seems like since I cannot find a solution I have to options weld the drain hole shut or buy a new rad. Just seems a shame old rad still in good working order. Any responce or suggestions appreciated.