If you haven’t already, switch to LEDs. You can use a much smaller wire which will be much easier to run. Definitely use some kind of lube, it will go much easier. (Soapy water or a wire-pulling lube). I lost my messenger when pulling the old wires (the wire broke). I was able to pull it back from the fixture end and threaded a 1/4” steel fishing tape with a little difficulty. Others suggested using a ferrous nut tied to your messenger and coaxing it along with a strong magnet. Very cool don’t ya think? I’ll definitely try that some day.
Ft Lauderdale for a few days.