QSM11 vibration at idle speed

This is from the parts manual; however, my spares are 35". Strange.....

My props were 28/32 when I started and ever had any engine load issues. Currently running 28/28.5. GPH is the key per Tony and I’m not there 100% but very close. The biggest EGT problems we saw before the addition of the dingy was jumping over 1000 degrees when backing off to 15-1800 RPMS in rough seas. That’s where the High EGT we’re showing up. 1800-2000 none issue witH EGT and the tender. Remember when you’re upping you’re RPMS you’re pushing more air with your turbos through the engine.

Wow that's a substantial reduction. The DB is 4000lbs heavier so that will make a difference but I have a tender on the swim platform that weighs 775lbs. I read Tony's articles again and he says to reduce prop enough to increase rpms 150-175. The prop shop guy tells me that will be about 28X33 for my boat. I hope he is reducing enough. We'll see.