Chain adjuster broken off (what to do best?)

well - despite having been on this forum for a while and reading this thread (and even commenting on it) I managed to shear off one of my adjusters....

so I can now positively attest to the fact that snap-on, and ONLY snap-on extractors work. That combined with spraying the adjuster with WD40 morning and night for 4 days till I got around to working on it.  I did break one extractor but that was only because I drilled the hole deep enough for the extractor to grab but still too shallow that it bottomed out in the hole and snapped.  I then attempted to drill right through so I could spray WD40 into the swingarm but my drill bit caught and snapped off in there - Doh!
Anyway tonight I successfully got it moving (with scary force on the extractor) with my second extractor and taking it real slow got the whole thing out.  It was pretty amazing to see that the WD40 had penetrated all the way up the threads.

All fixed ready for a long weekend ride up to a game park in the very north of the country

Hope you applied plenty of copper slip to the new threads ?....