I will find the cure, I promise.
An update on the actuator, the magnets are loose inside and so will try to glue them back in place. Also I seemed to have damaged the actuator casing when removing it from the TC, there is a hole in the casing used to locate the actuator on a dowel on the TC and it is cracked. Might try to get that fixed but looks unlikely, seems that you need to be very careful when removing the actuator from the TC.