Lemme think..
Check the coolant S.G. They run hot and a poor mix will wreck 'em.
If the battery goes flat or you disconnect it, you have to fully heat cycle the engine hot to fully cold 3 times to turn off the engine warning light.
The recalls need to have been done. most important one was the fuel tank connections. VIN No down the phone to the local dealer or Trumpet themselves should let you know if owt is still outstanding there.
They love decent tyres. mine runs corsas and thrives on 'em.
A double bubble is a good extra. the std screen can be a tw*t when riding fast directing the air in entirely the wrong places, regardless of height.
It's had the remap for the can? cool. They are very tune reliant. if it's wrong it'll run really bad. Mine runs bad, but im lazy and i like the Gixxer slabside - like throttle response..
The speedo sensor does fail. ensure which bit has failed if it does. one costs 30 quid, the other 80.. easy repair though.
Other than that... nowt really. a wolf in sheep's clothing. Ride it like you stole it. They love dominance.