Well done Gordon. Now get a slightly oversized non-metric fitting and when you bore out the hole, it will be in fantastic shape as it will be all newly exposed fiberglass. Keep the hole tight however, in fact you can "screw in" the new fitting as I've only been able to find a mushroom fitting that is fully threaded OR with a male tube fitting at its inboard end (which to me is not what is needed, the cap on the inboard end is a lot safer). Hal