4 degree ignition advancer are their worth fitting?

[unfazed]

You shorten one cable and lenghten the other to get the valve to rotate to the correct position.
Take up all the slack on one cable with the adjuster and add slack with the other adjuster.

For example if you need to rotate the fork down adjust the slack out of the cable by screwing out the adjuster on the lower cable then screw in the adjuster in the other cable until you have 1.5mm slack back in the system. After each adjustment start the engine let it Idle and then turn off the engine with the kill switch to check it.

A fiddly job but persevere :thumbup