I need some help on engine/boat/prop setup. Just repowered and Here's what I have :

1988 ranger 363v
2018 Yamaha 150 vmax sho
solas 14x23 (3 blade stainless)
No setback plate
Prop 5" below pad
balanced load, 2 people, full fuel, tourney load
Solid hole shot
WOT 5900, 63mph (gps)
water pressure is 25psi
1/2 trim (flat) no roster tail

Poor boat handling if I trim above flat, which is 1/2 on gage, at lower rpm's boat porpoises, at higher rpm's boat chine walks. I cant seem to get up on the pad and control the boat.

I have owned this boat for 28 years with a xp150, 24 shooter 4 blade prop. Could get on pad at 3/4 trim with low roster tail and have a very stable ride. After repowering with the Yamaha 150 sho, this boat seems very trim sensitive.

Any suggestions on motor height and prop to get my stable boat ride back.
Dean Kerr