By all accounts the Ro76 is a pretty decent shoe. Not as light or stiff as some more pricey models, but very well regarded.
However, they are generally quite narrow which is why a lot of people find a size larger than normal is required for a decent fit.
I have the Mo76 which is very similiar (spd version) and also got a burning\tingling and even numb right foot until people here suggested loosening the lower straps a bit.
It worked for me, although when these wear out I'll be looking at those Shimano shoes that are advertised with a 'wide toe box' to see if they may be a bit better.