Yoga 13, Stop that Buzzing !!!

Over the past few months of owning a Lenovo Yoga 13, I have been plagued by a loud buzz from its fans every time I hold it on an angle or even vertically (in tablet mode).
Now having a bit of time to hand (and also having got thoroughly sick of the buzz) I have sorted it and the fix is surprisingly easy to do.

The first step is to take out the keyboard (this is easy to do and there are plenty youtube vids on this).

Step two is to relieve the left had fan casing a little bit, (if you shine a flashlight across the fan housing you will see a faint curved line following the curve of the fan hole on the left hand side of the left fan (looking at the unit with the memory module on the left).
To do this you need to bend the fan housing up about 1/2 to 1 millimeter, around the left side of the left fan, following the faint line you will see on the fan casing.

This problem seems to be a manufacturing defect, maybe the construction system that puts the laptops together presses just a little to hard when putting the fan bit (or some other part) in and thus bends the fan housing

All in all I am now quite pleased with the buzz-lessness of the unit ;-)

Note. If you do this for your unit and break something in the process, I can NOT be held accountable for your actions or the breakage, this worked for me but may not for you.