Originally Posted by ThatChap

I cleaned up the square-taper cartridge bottom bracket, gave it a GT85 enema then reassembled. Riding it around the block, the chap on the bongos seemed subdued, but still there. I've ordered a Shimano jobbie from Hevans which I'll plug in tomorrow (provided I can remove the crank arms again (trembles). I'll post a pic of the threads which I think are much healthier. The threads on the new crank extractor are taller than those on the old one (which I've subsequently had crushed) and harder/sharper it seems - it was like a knife through butter albeit powered by my droopy musculature.

Definitely feel I was lucky. The procedure seems so fraught but Jesus smiled on me so I've converted to Mormonism.