[Squeek]

So, back to the point...

You said your method was...

left index on z, left middle on x, right index on c, right middle on v

So, the left hand is in some form of extremely backwards and unnatural position whereas your hand must be completely flipped around in order to hit the keys. Got it.

There are plenty of older keyboards that have this arrow arrangement already. Go find one. But trust me, it doesn't help at all.

~Squeek