After second weekend in a row of rearanging my prop pitch and diameter (the hard way)I was wondering if anyone has ever tried these props? Are they expensive,durable all they are cracked up to be by the manufacturer.Water level in our lakes and the rivers that connect them can change drastically overnight.I've got a 90hp 1982 inline 6 merc if it helps with any info.<br /><br />thanks<br />dave<br /><br />------------------<br />no replacement for displacement!