Kwikee (Lippert) designates the Digi Sync FLS as “faster/longer/stronger”. If you have the FLS System, I have quite a few documents on repair and replacement. Contact me if you may need them.
In repairing my slide mechanism on a 2008 Sightseer 29R, I did a lot of research. I found documents leading me to believe the actuating system was made by Actuant SVS as part no. 901000401 (per the PDF drawing they posted).
A key part of the system is the use of an ACME Nut (made of plastic) which is known to fail. Cheap part; a bit pricey to replace. The replacement ACME Nut is secured by two, slightly thicker clevis pins. The OE parts have a tendency to bind, then bend, then put too much pressure on the inside threads of the ACME Nut which then either strip out or the ACME Nut itself will crack and fail. The replacement ACME Nuts utilize a slightly larger clevis pin (5/16” X 2-1/4”) to retain the nut; they are a little stronger. Both the nut (Power Gear 1612554) and clevis pin (Power Gear 1213239) are available on Amazon.
Additionally, if the system does operate and you are not seeing an indication of Fault Codes, you can perform a ‘self-test’ to sync the motors on both the front and rear slide rams. Here’s a link to Winnebago’s description on how to sync the two motors:
Be sure the coach is level, brake on, engine running. Then briefly extend (only a second or two), then retract immediately. Do this again and when the slide retracts, you’ll hear a sound (“clink”) that indicates the motors are in sync.
Finally a note to the wise. I failed to use slide locks on my forward slide for the first couple of years of having the motorhome, including an 8,000 mile trip over the Alcan Highway in Alaska. Our slide failed about 3,000 miles later on the east coast. This is when I learned about the ACME Nut. Without the locks in place, it’s amazing how much the slide will move while you go happily down the road…and every movement is pressure put on the ACME Nut if you don’t use the lock.
Good luck on resolving your problem.