The spring should actually be helping to pull the awning back in, so more turns should make it come in more easily. Think of it as applying tension when the awning is all of the way in, and getting even tighter as the awning is deployed.
Is it possible that you wound the spring in the wrong direction?
This was the problem with mine. It would come in a bit and stop. Wait, and it would come in a bit more and stop. Apparently a previous owner had taken it apart and wound it backwards. Works great after winding the correct direction.
Spring unwound on Dometic 9100 power awning
in Technical Tips and Tricks
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This was the problem with mine. It would come in a bit and stop. Wait, and it would come in a bit more and stop. Apparently a previous owner had taken it apart and wound it backwards. Works great after winding the correct direction.