yep did mine recently. bit of a bastid if you have to remove the hydraulic cam tensioner, which i did
You can get the cams out without doing that tho, just have to take them off in the correct order. Cable ties are your friend, strap the chain to the cams so you don't loose the timing, works a treat
Al the front plastics come off (the two dakar ones and the middle section.) The airbox comes off, oil tank off, battery out, battery box off, cover over relays off, rear strap that the seat latches on to off, throttle cable off. I think that's it
It'll take you about 3/4 hour to get that far, there are a few other small bits to come off but nothing over complicated. Then it's just a matter of taking the cam cover off and measuring em, remembering to make sure the engines at tdc with the special bolt, i can lend you mine if you don't have one or they are a couple of quid from
motorworks.
If you do it as part of a major service its not too much extra work as to drain the oil it's best to take the tank off, draining the coolant takes some other bits off.
good luck