i have the old, greyish mavic 321's
the old vavle holes only big enough for presta.
But id like to run schredar, (sorry bout spelling)
some guy said i cant drill them, or i'll crack the rim?
the rims are pretty new, i havent been running them for eyars..
actually only a couple months.
Cove Peeler For Sale, cheap.
http://buysell.nsmb.com/showproduct.php?product=2717&cat=13