Problem...I have 2 mega transducers (a trolling motor mounted unit for the bow unit and a hull-thru for the console unit). I get crystal clear mega images on my bow unit but not nearly as clear on the console unit. Could this be an issue with where the console unit transducer is installed on my Z521? The transducer came with a 3' spacer but I didn't use it. Could this be the problem? Anyone else have a similar issue with quality of images from bow to console?