brine refill fleck

Hello, I would appreciate if you could please provide some assistance is verifying and helping me fine tune the Fleck 5810 SXT water softener I have installed. Last time I checked my water softener, I noticed that not much brine was filled (very low) and the water wasn't getting softened enough...

rebuilt this 1500 with new seal kit, piston, brine stem and seal, and new distributor tube. unit isn't plumbed in backwards. pictures show unit in service position. why is it drawing brine during refill (during 2nd set of spaces)? Wrong cams? cams installed incorreectly? microswitch...