what is your motor height? my 115 yamaha, which of course has 4 mounting holes for the bolt is in the 2nd hole counting down from the top.
My prop seems to ventilate on turns and on acceleration, especially if motor is not trimmed fully down
The Sea Hunt owners group talks about those holes. You may want to try their web site.
http://seahuntownersgroup.yuku.com/
ZX
i have the same boat and motor
and using the same mounting hole you are using with no problem
If your prop is has ding on it it will ventilate I used a flat file on mine and smoothed out the edges and it stopped the venting
Maybe yours isn’t propped the same as chapin’s?
It ain’t no mystery…this beer’s history!
Little late to the party but 2nd hole down too.
Mine was propped wrong from the dealer. Chris V. @ Team Charleston Marine figured it out for me.