Motor is a 2006 250hpdi

Hen trimming down and only down about 20% of the time I hear a clicking/popping/cracking almost like plasting that sounds like its breaking.

This only happened this weekend?

I have looked it over top to bottom and cannot find anything wrong or out of place. I spent 25 minutes trimming up and down almost drained a battery and cannot duplicate it out of the water. Any ideas??

Oh its on a skeeter 20I if it matters.