I have owned Delia for about four years now and have been disappointed with her speed while under power. All I have been able to get out of her is a little over 5 kts at 2100 rpm. Hull speed should be around 7.2 I believe. I suspect the previous owner may have under propped her. She has a Perkins 4.108, a gearbox ratio of 1.9:1, and a 16" featherstream with an 11" pitch setting. What size props are the rest of you running?