Hi Terry, I'm about to take your advice and replace only the dust seal.
My Vmax is a '93 with 23K miles.  I had a pretty nasty leak from that
location, which occurred quite suddenly.  I have some fine rubbing
compound that I use on plastic parts to eliminate scratches which I'll
try on the piston wall.  The wall does not look inordinately worn.  It
does have a slight lip towards the rear of the cylinder (the side that
faces out).   That should do the trick.  I have the piston assembly
soaking in brake fluid so that the piston seal does not dry out.  I'm
about to call Yamaha to see if I can just get the seals.  I can't seem
to take the piston seal off anyway.  Does it have to be cut off?  Does
anyone else have and experience or advice on this?    I'll let you know
my progress and/or success.

Thanks for the tips!
Vmaxman
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