Did you check the archives?
There is a lot of back-and-forth and info in the archives right here. Catalina Direct also has retrofit kit for this. http://www.catalinadirect.com/store/StoreHome.cfm While you have a Cat 30, the issues and the fixes are the same on a Catalina 27. Judy B. has a portion of her Cat 27 website with the drawings and info from the Catalina factory on the fix for the 27.
