And the stuff is hard to get rid of.
I've pulled apart the 63A cogbox from my 1200. 2nd and 3rd gear syncho had been but a distant memory for quite some time. Then while unleashing the supercharged fury in late Oct last year (And showing off to an out of towner) it shore off the roll pin in the 2-3 selector fork.
I planned to whip it out, and slap in a new pin when I learned that Don was going to be in town just after Xmas. But when I drained the oil, three energizer lugs came out with the oil. So I accepted that more serious repairs were needed.
Upon pulling it apart, I've found that the syncho rings are pretty much shot. I couldn't find the blocker ring to gear tolerance in my book today. (Wasn't looking hard enough)But upon closer inspection, one of the them actually has a crack right through it. And one of the energiser lug springs was broken too.
Given that the rings have been cavatating/slipping on the tapered journals for aaaages, I'm a little reluctant to reuse them with replacement (although likely not new) rings. I still have the remnants of my original A series 63 box. But it was in such a bad way that I sswapped my behlousing over to an entirely new box.
Then I've got an allegedely 90,000km L series 4 speed from a 910 bluey. Somebody on here reckoned that they use the same rings as the 5 speeds. So I may scavenge the blocker rings from that. And even though the gears are on different sides of the selector hub to my dogleg box, (H pattern verses dogleg) they appear to be the same. The ratios are bang on the same. But untill I get the four speed fully stripped and hold the gears side by side in hand, I can't say for sure.

The poor old datto has been sitting on the driveway since oct '11. And I'm starting to get an itchy right foot again.