MOPS BUFFER- Need ADVICE

[Mano]

Hi all,
    If the MOPS buffer for running formaldehyde gels to separate RNA is
"bad", will it affect integrity of RNA?  Or else, does it affect the
migration of RNA? How about pH?
I have apparent degradation on my gel, but I beleive my buffer is bad..
is this possible? or is it just smearing?  I'll repeat it with new
buffer anyways.

Thanks.