Friend Steve, there's a doohicky

available from Brownells that helps to eliminate vertical stringing inherent to the No.1.
http://www.brownells.com/.aspx/pid=16944/Product/RUGER_reg___1_ACCURIZERAlternative is to d&t the spring hanger and install a screw to apply pressure against the barrel which will also make the forend free floating.Did the latter to mine and BINGO !!
Saves ya 60 bucks as well.
Call me soon to ward off the snow demons.

BTW, Ruger is notorious for non cataloged and product runs on a whim it seems.