I don't think so, I had a fairly close look at them and they seemed fairly fine (I'm reasonably sure they're not that old).
Getting pretty bummed out by the whole thing, I think the bike's spent more time being repaired now than it has had being ridden.
If the throttle linkage is easy to take on and off i'm tempted to try popping my missus Scrambler carbs on just to see if it leaks then - wondering if it _is_ the carbs or maybe i'm missing something...
?
Ant