Stripped Oil Plug

[taranis]

Changed the oil yesterday using the standard oil drain plug. As the subj says, when I put the bolt and crush washer back in, it felt like the bolt was starting to strip.

Got the bike out today for a bath and sure enough, a small puddle of clean oil had formed under the bike overnight - maybe three tablespoon's full.

I know the drain plug is a 17mm, but I don't know the pitch. Gadget's site has a recommended fix using a 12mm, which I'm sure isn't right for the Nomads.

Anybody have some recommendations for a fix? Retrill and tap the hole for a new, larger plug? Or can I get a higher pitched, self-tapping boltt and crush washer and rethread it?

I have a group ride with friends tomorrow too - sure would hate to miss it.