I have a 2005 Donzi 35ZR with a set of 525's & 32P props. It had a 1" spacer when I got it & was really sluggish coming out of the hole. Top end was 88 MPH. I elected to put a 2" spacer in the outdrives and it did a world of good. I ran 89.6 MPH with a great whole shot, but the engines were running right at the Rev Limiters of 5,500 RPM. I talked with Herring & they furnished me a set of 5-Blade 31P props. These dropped the speed to 86 MPH at 5,100 RPMs.

I would like to see if anyone has been down this road & has a suggestion. I would like to see the 35ZR run mid-nineties if possible without going into the engines.

Any suggestions greatly appreciated.