I've had this question before and Lippert told us that you can't upgrade the remote you have to a newer style. But we do have the replacement remote you have with the part # LC206436 like you mentioned. view full answer...
The correct replacement motor you'd need is the part # LC141893 if you do determine that the motor is at fault. If the battery on the trailer is in good working order and all of the wiring is clean and tight it would have to be the motor. You could try running a jumper wire from your vehicle battery to further test this if needed. view full answer...
Based on what you listed yes, the Dexter EZ Flex kit part # K71-652-00 is correct for your 2011 Keystone Outback Sydney. The only thing you might verify is the distance between the bolt holes from left to right on your current equalizer. They'd need to be between 5-1/4 and 6-1/4 inches. view full answer...
The Lippert replacement motor part # LC141893 would work as a replacement for what you have and has a higher RPM rating of 7,140 which would be faster than what you have. view full answer...