Chief....
I cut into the fuse bottom at the former just in front of the tube exits.....then I just cut away the glue and with pliers ripped those crummy plastic tubes out of the airplane.
Mine had sharp bends in them which made the cosmoline soaked wires drag even more.
I installed Sullivan red and yellow pushrods.
I used the plastic pushrod joiner in my installation and it has worked well for a couple of years now.
The entire installation works Cadillac smooth now. This was a lot less work than putting servos in the stabs....and trying to balance the model.
My airplane balances just right with the OS91P, LiIo battery with Jaccio regulator....
Originally, the elevator servo arm would twist severly and would have broken off had I flown the airplane with the original wire pushrods and plastic tube guides.

For the wing bolts.....I tapped a couple of hardwood blocks for 1/4-32 and put nylon bolts in there.....same thing for the bottom hatch cover with an 8-32 nylon bolt.

The general construction on my model is pretty bad....especially the elevators.
Each ele half was built on a flat surface....wrong....this means the c/l of the trailing edge is not parallel with the hinge line....ensuring that each elevator cannot be aligned to the other.
So.....I split the difference...one side is too high...the other is too low....
It flys ok after I diddled the adjustments and got it trimmed off.....
Hopefully, other examples of this airplane are built a lot better than mine.

DH