Eric
Most of the time, yes, you have to install, some "preload" to the springs. In the old days, as in say, about 20+ years ago when I did one of my awnings, I pre-wound the spring about 7 full turns, if I recall. That way, when it winds back in as the awning is retracted, even though the spring is unwinding, at the end, when the awning it totally up against the coach, it will still have some tension on it.
As you extend an awning like yours, from the fully retracted position, you're also WINDING the spring(s). So, when the awning is fully extended, it's gonna have quite a bit of tension on it and or, the springs. If you don't put any pretension on the springs, as you approach the end of the roll-up, you might and most likely won't, have enough tension to finish rolling the fabric as the arms approach totally vertical, next to the coach. Hope this is somewhat clear and helps some.
Scott
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2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
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