I currently have a 14" with 16 pitch and it looks rough and chipped pretty bad. its not cutting water very well at all. I want to keep the size and pitch the same because it seems to run good with it but i cant find a 14" 16 pitch anywhere? The motor turns about 5400-5500 rpm with the prop now so i dont want to change the size if i can help it. what would be my best choice? here's what i found as far as sizes goes. 14" 17 pitch 13-1/4" 17 pitch 13-3/4" 15 pitch Which would you recommend me getting? I'm thinking if i get a new propeller that's cutting water good it may tach more than 5400-5500 so i could go with the 14" 17 pitch but i dont want to loose a lot of rpms with increasing the pitch. But if i go with a 15 pitch plus dropping the diameter of the prop I'm scared it will be too high rpms. I was thinking if i did go with the 14" 17pitch it would only loose about 200rpm so that would put me at around 5380-5480 which still should be a good range. plus it may gain a few mph faster? or maybe i should go with 13-1/4" 17 pitch? it is a 1974 evinrude 70hp model 70473-M also on the prop it is a standard rotation correct?