Have in mind that there are some emus that doesn't detect right analog even with correct range. Which emus are the problematic? Generally, the emus that have proper right stitck support are PPSSPP, Broglia's ones, Mupen and ePSXe.
Other won't support it natively as far as I know.
In any case, the right analog range will be fixed via official or custom rom, so don't worry.
In GPD G5A is the same and I will modify that. I don't have G7 yet, but as sson as I get it, I'll look at the firmware.