Only other suggestion is what Ian already mentioned .. to check /compare the 2 switches on Q relay that connect to kicker switches.
Q relay switch with Brown/white wire on one side and Blue black wire on other side connects to right kicker switch
Q relay switch with Brown/white wire on one side and Orange black wire on other side connects to left kicker switch.
Both switches will be open one way (either with relay operated or not) and closed the other. You just need to check that both those switches are doing that , but I am not sure that is the problem . From the parts of the schematic Ian has posted, this is the only part where those 2 kicker switches are not operating in parallel
Cheers
Dave
