Quicktime reference files - re-wrap - fps off

[speedyrazor]

Hi, I apologise for asking this here, but I found an old thread by Selur that got things working mostly for me (https://forum.selur.net/showthread.php?tid=162), so thought I would ask here, as you guys are very knowledgeable.

I have been supplied loads of QuickTime reference files (.mov container, with video.m2v and multiple audios.wav). All I am trying to do is re-wrap this into a single .mov file, which works fine using quicktime, for example.
To get the below command working, I need to run the ffmpeg.exe from the same folder as the content.
Using the below command I am able to achieve this, but I have a couple of issues which I can not seem to resolve.

c:\Temp>ffmpeg -enable_drefs 1 -use_absolute_path 1 -i CSP0002377.mov -map 0 -c copy test.mov

The input file is 25fps, but my output file is 26.40fps, and I can't sort out why this is happening.
I also get lots of these errors in the ffmpeg output:

Non-monotonous DTS in output stream 0:0; previous: 227334, current: 227328; changing to 227335. This may result in incorrect timestamps in the output file.

I have attached the ffmpeg outputs for the the initial copy and to show the format of the outputted file.
output1.txt = Initial ffmpeg copy
output2.txt = outputted file
If someone could point me int the right direction, that would be great.
Thanks.