Found a small spring at the bottom of the cavity after removing cassette, any ideas as to where this belongs?
Cassette?? As in stereo audio tape cassette?? If so, here's a wild guess as it's nearly impossible to know without looking at the unit.... It holds the flap closed. If it still works I wouldn't worry about it.
2020 Pinnacle 32rlts
640 watts solar, 300AH lithium
2020 High Country Duramax 3500
Ms says I'm full of useless knowledge and other stuff...