Hi, I've got a 1993 90hp Evinrude E90TLETS. Just replaced the water pump. First time out it was running fine, then I trimmed up too far and cavitated the prop on a turn. Shortly after that I started getting this metallic buzzing noise from the engine at 3000 - 4000 rpm. May be making the same noise at higher rpms, but may be covered up by the usual engine noise at that rpm. Anyway, if you would watch the video, and listen for the sound as the rpms increase, and give me your opinions/suggestions, I would appreciate it! I go through the rpm range a couple of times so you can see how it sounds. https://youtu.be/6kR1TggrlLM