The only problem that I had with my C-80. Actully it was losing My DSM signal. This truned out to be a battery problem. Battery would lose power then you would start getting the alarm. All I would do is start up my motor and charger the batterys and the problem went away. The only real problem that I found was learning to use all the features.bigeye joe said:Anybody Have Negative Experiences That Might Help Me Out ?