Help! - Akai GX-95 MkII, Bias, Recording level

[zstoja]

Hello,

It is Akai GX-95 MkII.

I have two questions.

- I set calibration, level and bias.
If I playback this part of tape there is just tone for right channel, for left is nothing.
But, if bias is changed during music recording both left and right channel are fine.
Is it OK, else how to fix this?


- I set calibration, level and bias to correct values.
During recording I always get that tape level is almost 3db less than source level.
To correct that, I increase recording level almost to +3db (maximum).
How to fix this?

Thank you.