Does anybody know the lengths of the track that comes in part numbers 44829 and 44899

I recently purchased a Bachmann N scale GP 40 EMD Diesel Locomotive Penn Central & Matching Dummy.
I need to replace all four trucks and couplers for four modern sets. I have tried to figure it out but I can't and I need some help.

Can a Bachmann 78998 magnetic uncoupler be used on EZ Tracks?

What couple. height gauge do I use on the Bachmann EZ Track?
The one I bought from Micro-Trains is not wide enough to reach both tracks.

I recently purchased a Bachmann N scale GP 40 EMD diesel locomotive and a dummy that have the original couplers on them and would like to replace them with either a Micro-Trains coupler or a Bachmann-style modern coupler. Can anyone help this old man?

How do you remove a complete post?

First off thanks for letting me join the forum.
My problem is that none of my cars will stay coupled together.
I just purchased The Yard Boss the other day at Hobby Lobby. It is my first "N" scale set.
I have tried everything that I know to try having had an "HO" train many years ago and have passed it on to my grandkids.

Any help or suggestion would be greatly appreciated.

New to EZ Tracks. What is the best way to make them permanent on my foam board base, hot glue?
What have you used?