RainSoft Not Final Rinsing or Waterfilling Brine Tank

I have a RainSoft AM-18 (mechanical) water treatment system which was re-bedded with X-100 resin and placed in my home in 1999 (I used to work for a dealership here that sold back to RainSoft since that time). They can be very successfully rebuilt. New ones are prohibitively expensive, for ME anyway. So is their service now that I don't work there anymore.

Recently the brine tank overflowed and flooded the laundry room. It was determined that while the gas company was checking for gas leaks they moved the brine tank and in doing so the hose got pulled too far up into the "hose tunnel" in the brine tank so it kept refilling but never taking water FROM the brine tank TO the actual "softener". This was remedied by simply pushing the hose all the way back down and then up an inch. A test by adding food coloring to the brine tank revealed that the brine was from that point forth being brought to the softener tank as the blue tint was visible through the clear tubing.

So THAT issue is solved BUT... get this. The softener tank is not doing a final rinse OR refilling the brine tank anymore.

I found this out by: 1) Marking the water level while soaking (never filled up after cycle so it is not "re-wetting" the brine; 2) Flushing the toilet the next morning and turning on the sink, the water that failed to do a final rinse came out (remember my food color test?).

WHAT ON EARTH could be wrong with it? It's gotta be something quite simple since the brine tank sure as heck was filling last week... filling the whole laundry room as a matter of fact!

Is it the hose position, the float, the cycle dial? They are essentially the same on ALL mechanical water softeners/treatment systems so I'm willing to bet someone in this forum of vast knowledge can advise me.

I've zero $$$ to have a technician in if it's some silly thing we did when adjusting the hose position.

Please help if you can!

Thanks!

T.K.