So decided to do the 15000 mile service myself and check the valve shims...
Things I learnt very quickly:
1. The front cylinder heat shield is a real 'pig' to remove - x2 electrical connectors are pegged into it and you need to be Houdini to release them from underneth

2. Why didn't Suzuki make the radiator hoses an inch longer! The front cylinder cover is a bitch to get out

3. The only way to get the front cylinder cover back in, is to take the fan off the radiator - this isn't in the manual

4. You need a 14mm deep socket to get the spark plugs out - surprise, surprise, there isn't one in the toolkit

5. The rear cylinder is a darn sight easier to get at to check and work on than the front

.
6. You don't need to disconnect the coolant tank, there is enough hose to move out of the way

I found x2 exhaust valves, one front & one rear a bit close on the lower tolerance but have decided to leave them well alone. At the 30000 mile service I will probably go for a coolant change as well, so can get the radiator off and out of the way...
Next is to finish re-assembly and then check the injector balancing, oh and for any oil leaks
