Don't want to pay 400.00 for a new motor for awning if I can get around it. I have a 2012 Rockwood, 18 ft awning, mfg/pcn 958470049. Is that the normal life for the motor? I averaged we may have used it 60-70 times over the 7 years. It's never been damaged or left out in bad weather. Wondering if a used one would be an option? Opinions and suggestions welcomed.