When the mast was down, took advantage to run new antenna and cable. Used RG8X which is about 1/4" instead of the original antenna wire from the factory which was about 2 times the thickness. In my boat there was a separate wire chase which was used to run the wires for the wind instrument and the masthead anchor/masthead light. The original large antenna wire was not run in this chase. There was no messenger line in the chase so the plan was to pull out the wires pulling a messenger to then pull back the same wires plus the new antenna wire. At first the wires would not budge but a generous heavy application of silicone spray shot in the chase managed to get things moving easily. This of course means running a new wire up the mast which is probably not a bad idea; replace the antenna also. By the way just abandon the original cable, cut off the ends. Run the new cable as a home run from the antenna to the radio unless your mast comes down yearly. This will most likely be easier, faster and cheaper than removing the overhead liner and also the side ABS plastic side liner behind the window frames. Not to mention that you will most likely damage the Whisperwall vinyl and have to replace it all to match. Also note here are the overhead grab rails to deal with. This vinyl is now 14 years old and delicate. As an example I put some blue masking tape on the vinyl and when it was removed it took some of the vinyl with it. Good luck.
