Instruction cards / bezels not very legible

[DietCoke]

I'm running Mame .160 with a resolution of 1360x768, and while everything seems to be proportional the bezels aren't particularly readable.  Am I doing something wrong?

I've attached "Current.jpg" for what the screen looks like with the bezels turned on, running Frogger as an example.  Something I've noticed is that the instruction cards are largely unreadable.

I've also attached "Larger.jpg" to show what I would like the screen to look like, with the instruction card readable.

Is this just a case of me having too high-res bezels?  Or something else?

Scratching my head over this one...