No problems but be sure to read the guides on Pat's Site thoroughly before you start.
Pull the EXUP cables and coolant hose clear of the frame behind the airbox to ensure you can get the latter far enough back to remove the carbs easily.
When you undo the clamps holding the rear carb rubbers to the airbox, push them back against the airbox and re-tighten before attempting to slide out the carbs. It will stop them getting dragged and bent.
Put the small drill bit into the pin vise until no more than 1cm is showing. Feel carefully when drilling and you'll notice the bit getting tighter to turn just before it breaks through. Take care at this stage.
![Wink ;)](https://foc-u.co.uk/Smileys/efocicon/wink.gif)
If you've not altered float heights before, be sure to identify the correct position to hold the carbs to get the accurate reading. It's covered on Pat's Site.