i ran into this same problem on my old '84 yota, the idiot that owned it before me crossthread a plug big time. i did the tap + insert thing too. i got the shavings out by starting the engine on 3 cylinders for a few seconds to blow them out of the hole

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!