Perry, drill a larger pilot hole.You can drill larger than you'd think in metal, shouldn't strip or wring off. Test one first.
John and Susan in a 1993 34' Classic--Bonnie
pulled with a 2007 Dodge DRW Cummins --Clyde
12 Tires on the ground
Go often to the house of a friend, for weeds choke the unused path........Emerson