I did the same thing on my old Vulcan...Drilled it out, retapped, new drain plug...Now I use a torque wrench for everything...cheap insurance...
Not to pick on PaIN (and I've ridden with him, and I think he's a great guy, even if he may not believe that I really have a wife).
Not to come across -- I hope -- like a know-it-all, or someone who's never screwed up (see my addition to the recent dropped-bike thread, or the fact that I dropped my oil filter in the catch basin just a week or so ago, changing my oil).
I'm really surprised by how many posts I've read here and over on the V-O-G about screwed up oil plugs. Or maybe it just seems that way, ya know, certain things seem to stick in your mind.
I've never claimed that my shit don't stink, but I've been changing oil and putting back drain plugs for 18 years now (I started riding late in life), on four bikes, and -- knock on wood -- never had a problem.
- I put the plug in by hand, all the way. And my hands are not that tough.
- I use a torque wrench after that, at which point it's not going to turn much. The spec for our engine's drain plug is 15 ft-lb, which isn't very much.
- I own four torque wrenches -- two Harbor Freight, and two Sears -- and try to use one that has the required spec in the middle of its range. The HF ones are cheap and on sale all the time; no, they're not precision instruments, but they still claim a 4% accuracy. And I got the Sears ones on sale, including a 1/2" one I only use for car-tire changes. We're talking maybe the cost of a big piece of chrome doo-dad, total for all four.
- I store the torque wrenches set at 0.
- If I haven't used a wrench in a while, on the first (or only) use that day, I'll sneak up on the spec value, i.e., set it about halfway, tighten, and then set it at the real value.
I'm not a slave to manuals -- the torque spec for the battery terminal bolts, for instance, is definitely too low (I checked it out once, and then dispensed with it). But much as I'd like to get manly on those oil drain bolts, I resist the temptation to show how tight I can make things; when the wrench clicks, you must quit.