I have a 1901 Mako with a 115 Merc Optimax ( bought Feb '07) It does not seem to get up in RPM's and runs WOT @ only low to mid 30's... I think 5500 RPMs is the max factory rec. If this is right why am I not getting more top end speed and higher RPM's ( I max out @ 5000rpm)
Thanks for any and...
