I'm thinking about lowering the size/type of return jets to help circulate my pool a little better, will dropping the port jets down to 1/2"or 3/8" from 3/4" put to much back pressure on my pump to even worry about it? I'm assuming the different back pressure would change my clean filter pressure (for 25% DP for BW purposes) as well ? Has anyone had better luck with certain sizes or different types like the slotted eyes or even the rubber nozzle type(or would these rubber nozzle ones be good on the jet at the steps) ?