... and the effort you're putting in. From that, you can also estimate your speed. :)

despite all the variables, i do find the relationship between power and speed and grade very, very consistent and reliable. more reliable than the altitude or map elevation readout on a device... 200w and 5mph = 9%, 200w and 10mph = 4%.

I don't have a computer, but grade would be useful to me when on a long ride in unfamilar terrain, bonking on a long upgrade, where I say to myself, "Dang, I thought my granny gear was good enough for X% grade... what is this grade? Really? Jeez, feels steeper than that."

it is not the mount but the vibrations which affects a certain batch of Karoo 2s...I have had 2 with the same problem and they are due to some faulty hardware which they rectified in later models...

Do the same ride with the Karoo in your back pocket and see how much more accurate the total elevation becomes..

A mount which is more prone to vibrations will give a far worse reading than one mounted directly above the steerer...

It has nothing to do with blocked barometric sensor holes, wind, temp, etc....simply vibrations...

Hammerhead admitted a batch of these Karoo 2s had this problem and will replace them under warranty...unfortunately the 2nd unit I got had the same issue

Read my very first post :)
Also, this unit being few years old is definitely NOT covered by the warranty any longer.

Mount is bending the circuit board. Best I got

send them a message, you may be surprised...:)