I have my Xi5 mounted on the MKA-47, Im wondering if others that have installed this way have any type of vibrating in the trolling motor...Mine gets a decent vibration when going above 4. Even with the set bolt installed the TM simply isnt installed as sturdy as it would be if bolted directly to the boat. Is the vibration just a part of the territory with the MKA-47? I have switched from a 2 blade to a 3 blade thinking it might be an out of round prop but that has not helped...