Got everything hooked up and looked perfect until i noticed water spraying out of the shaft connecting the motor to the impeller. ****! I researched on the forum and got a pretty good idea of what i need to do to replace the seals. However my pump is a little different than the ones I saw here (pentair Superflow). I have an older Pentair Dynamo. I cant get the impeller to budge off the shaft went trying to turn in counter-clockwise. I dont see a set screw or anything holding the shaft on. Anyone have experience with this pump? or any advise?