Replacing Dropper Remote Cable Housing On Powerplay?

[Rideit]

Hi guys n’gals, have any of you replaced a dropper remote housing, and do you have tips?
(35 year veteran mechanic here, really struggling with a dropper.)
I guess before removing the existing one, I am curious if there are tube-in tube guides, and what is the best process to do this.
There is always a ‘most efficient’ way, and I certainly have wasted an hour trying to get the existing housing to move up and down smoothly inside of the actual Seat tube. (It is getting hung up near the bottom, where I can’t reach).
I have searched the manual, Google, and youtube, but I haven’t found any easy solutions.
Anyone?
Thanks!

 

[A06]

No in tube guides but also fairly accessible compared to some bikes Ive wrenched on. Best advice is get the park tool routing kit or similar and attach your fish line to the existing cable housing and then pull it through then simply reverse the operation to install new housing.