Just thought I would share this bit of information.
In October we took the bus from KL to Lumut as we were going to sty on Pankor Island. The bus dropped us off at Lumut bus station and directed us to the taxi rank and said you need a taxi to take you. At first we thought we were at the wrong bus station as we said no we can walk to the jetty.... They said no you have to get a taxi and changed us 28rm and took us to the new marina island.
This is a shorter ride than the trip from the Lumut jetty but it took 20 mins in a taxi and the further cost of 28rm.
I would recommend getting maps - me to be sure of where you are and walk the short distance and no not get caught out like we did.