HELP! Need performance data for 2004 30' Hardtop

[Sideways]

Have client with 04 30' Hardtop with 315 Yanmars. ZF 63 gear 2.48:1 ratio. Only getting 3550-3600 WOT. High idle getting 4200. Currently has original 19x27 4 blade props which seemed over pitched. But boat is not getting supposed normal cruise. Only getting 19.5-20.5 @ 3250+. Have spoken with Mastry, Ht Torq and Luhrs with little help. Need data from same boat for comparison. Any help is greatly appreciated! THX much!

[Sideways]

Would greatly appreciate any 30-31 owner's operating data. Engines, cruise, WOT, prop size, etc..
Thanks very much!!

[Cess001]

Hi Sideways,
Have a Yanmar data sheet with the 315's in rthe 31 Open. What's ytour email address & I'l send it to you.
Cheers,
Cess.

[Sideways]

Cess,
Thanks for Yanmar/Luhrs information. I have sent you my email address.