Yeah, Like above. To do it right you need advice from whomever built the rig or someone who knows. No shroud
on any modern rig. Stays are a different matter entirely.
For the motor
home, assuming nothing is actually broken, you might just wind
the slackness out of what you think is causing the loosness - it may not be the loose wire but an opposing one.....look up the mast
and see that she's straight within a inch or two. And then only sail in gentle stuff, no more than 10 degrees heel, until you really know what is going on.
Loos gauges are handy if you have some numbers, lacking numbers to adjust to they're pretty useless.