I've just purchased my first zed and after covering some miles I've become familiar with all the known traits, I'm actually a fan of the unrefined characteristics!
However, 6th gear does not like to select at speed. At 'normal' speeds it selects absolutely fine, but when 5th sees some higher revs, 6th will not select, it's as though it doesn't exist, you just hit a wall. Wait for the revs to drop and it'll slide in fine.
It seems commonplace for the earlier gearboxes to crunch, and maybe mine would if I tried to force things, but that's not clever.
Am I suffering from the effects of a worn syncro or could something else be at play here?