I bought some Igus cable chain and replaced the flexible wire carrier that went to the hot end with it. Then I wanted to install it on the right side also. I did, but what an ordeal. I did it to myself. I should have removed the filament before I started. But I didn't. I ended up breaking the filament off in the hot end. I took it all apart and heated it up with a torch and got the broken piece out. Got it all put back together with my cable chain and then I homed the axis and checked my z offset. It was way off. the nozzle was off the bed by 1/8" probably. I cycled power to the machine and tried again. Same thing. I took the hot end back out and re-installed it. Home axis and check z offset, still way off. I was a little nervous about adjusting the z offset since I had just taken this all apart. I figured I didn't clip something in right or something didn't settle correctly. I adjusted my z offset from 1.87 down to 0.60. I don't know what I missed or what I did wrong but it is printing again. Anyone else experience something like this?

So now I have cable chain on the top and side wires. I replaced the teflon tube and fittings (Bowden tube?) whatever it's called. I bought metal metric tube fittings and they are all metal, including the locks. I had problems with the black plastic locks breaking. I have some with male and female threads so I screwed 2 together and that is my coupling over the hot end. The metal fitting I installed at the feed wheel, I had noticed that the little lock was sliding in and out, whenever the filament would change direction in the tube. I also noticed a tiny pile of very fine shavings under it so I made a horseshoe out of a flat washer and jammed it into the gap between the lock and the fitting body. No more sliding.
The last mod on my list that I haven't done yet is to add some bright white LED's to the front of the hot end carriage, so I can see the nozzle and what's printing a little better.

Lesson learned: always remove my filament before pulling the covers off my pro.