Solera Power Awning problem

My new motor came today, it was an easy switch over, except for one small surprise. I tied off the arm about two feet from the motorhome wall so as not to let the roller go rolling away when I removed the motor. So I removed two bolts from the motor and while loosening the third bolt I noticed there was a tension still on the roller, of course it had to be the material (about two feet worth) was starting to make a big U, LOL, the weight of the material between the two polls was enough to run the roller. So I had to hold the roller from running remove the old motor and install the new motor with the bolts again. Now to make up the connection. OK put it all together and works great full out. And it works all the way back in, but, it is still so slow coming back in. I guess it must have always done that as I just don't remember, my memory isn't what it used to be. But it works, and that is what I care about. I checked voltage at the battery and I have 13.5 volts (I have 600watts of solar on the roof.