OK - so it looks like your membrane is showing a 99% rejection - that's unusually high so I wouldn't be surprised if there is somthing a little off on your meter.

Your DI should be 0 or 1.

Try using the DI cartridge from your Kent system and see if it lowers the DI to 0 or 1 ppm.

I'd jack up your pressure to 85 psi.

Your waste to permeate ratio is 5:1.5 or 3.3:1 - which is ok.

Other than your DI, system looks like it is running OK.

Russ