I bought my unit online and received it on saturday. I opened the box brand new and checked everything. I realized the transducer had some scratches on the bottom and on top had what looked like old sticky soda pop droplets. I also realized the transducer looked funny. Take a look at the pictures and be your own judge. I didn't worried about it too much. Mounted it on my Hobie Mirage Outback and took it out. And yes I mounted the transducer externally (My friend has the same setup that works perfect). Tried everything to clear all the clutter, but could not at all. The unit also restarts itself sometimes. Any help to clear all the clutter and the restart problem would be great. That transducer does not look like quality work in my honest opinion. Any help at all would be great...Please take a look at the pictures