I am SO dumb! I broke a leaking oil sender off trying to remove it (88 4Runner,22-RE),and drilled out the stub 1/8",then when enlarging the hole with a 3/16",the drill bit broke off...Anybody have any advice on how to get that piece of bit out, so I can "gradually"enlarge the hole so I can easyout the stub and replace the sender? Anyone have a similar situation that might be useful to know about? The piece is flush to the sender stub and the hole in the block-maybe dig around it,twist counterclockwise with needle nose pliers? Any thoughts would be welcome!