The Catalina manual that comes with the boat
gives very good instructions for adjusting stays and shrouds, even without a gage.Try the C22 Association website: www.catalina22.org There may be some on their discussion baord, if they have one. If not, look at the manual.If that doesn't work, read a Catalina rigging manual from any Catalina that has single spreader rig, like our Catalina 34: it's all done by balancing the rig first at the dock, then dynamically when sailing. http://www.c34.org/manuals/1988/1988-C34-Owners.pdf