The only thing that you changed was the salt tank its self?
When you say the valve was taken apart, what valve are you talking about?
Did you put about 5 gallons of water into the salt tank with the new salt?
The culligna 89 does the rapid rinse and brine tank refill at the same time , some times the float will be used but on the lower salt settings often it is not.
Is the water getting on top of the salt table?