Autosampler mono/stereo issue

So I am autosampling from a mono Microfreak, I put input 1 as autosampler source and automatically convert to keygroup.
The keygroup is stereo but with most sound on the right.
This happens with any mono source I use.
I didn't find any way on keygroup to just make it mono, but Air stereo width can easily solve that.
Anyone have any idea why this happens?

Autosampler will use the I/O configured In the 'Sampler' screen, so in the sampler set the output to mono, then launch autosampler. You should get mono samples.

MPC-Tutor wrote:Autosampler will use the I/O configured In the 'Sampler' screen, so in the sampler set the output to mono, then launch autosampler. You should get mono samples.

Yeah correct, on sampler page it must be Input1 and Output mono, thanks for the tip.
But if I sample a mono source to a stereo keygroup (mono in, stereo out) should the keygroup just have same level on left/right?
Why the stereo keygoups has 70% of sound on the right and 30% on the left?
That doesn't make any sense to me.