G'day guys

Looking at buying a 660 Tenere and have found a nice one that has all the bits that Id want for offroad touring.

Its a 2009 with 35k klm's.

BUT.....the engine number is in the middle of the range that have the 3rd and or 4th gear self destruct. (from the other threads on gearboxes)

Whats the odds of the gearbox letting go?
Is it worth perusing or should I move along and find another year?

Anything else to be concerned about in the 09's?

Thanks in advance.
Cheers