Install a bleed valve between the soft and hard lines and allow 1-2 gpg to mix. No slick feeling and very slight hardness.
I dont mind the slick feeling. You just have to retrain your mind that the slickness is not residual soap.
If there is any and I mean Any iron in the water then one should not put a bleed valve in..
The slick feel says the softener is working as it should.
Adding hardness back into the softened water is not a good idea, especially if you have iron or manganese in the water.
Well, water now feeling slick as I was expecting so I guess it was washing out the lines, water heater, whatever. Now to get waterspots off of everything from the prior hard water.
That "slick feeling" indicates that all the soap IS being rinsed off the body. When the water doesn't feel slick, it means you have soap residue/scum still on the skin. So you truly want the slick feel. That means you're really clean.