Sure,
What you want to do is;
Re-create the file location that your custom file is located, (beginning with the 'res_mods' folder in WoT path) zip it up and place it into Aslains custom mods folder which does the rest for us
First we need to locate the file - Search the WoT directory for the file you want: 'radialmenu.xml' go to properties and copy/paste it's location into a text document for easy access later.
In my case the file is located here: C:\Games\World_of_Tanks\res_mods\0.9.15\scripts\client\gui\scaleform\daapi\view\battle\'radialmenu.xml'
• Create new folders inside each other naming the as you go along until the structure is duplicated (beginning with 'res_mods')
• It should look like this: res_mods > 0.9.15 > scripts > client > gui > scaleform > daapi > view > battle
• Place your custom 'radialmenu.xml' file in the last folder (battle)
• Zip it up using a compression tool - Naming it anything memorable (I used WinRar - but make sure to put it into .zip/.7z format as only those will work.)
• Place the named .zip into 'Aslains_Custom_Mods' folder in your WoT directory. (C:\Games\World_of_Tanks\Aslains_Custom_mods - in my case)
• Install Mods as normal and the installer will automatically add your custom files at end of installation
The same process works for other mods too just with their respective files/folder structures.
N.B. One thing to remember though (not so much in the case of radial menu as it's just a text doc customize) but for other mods, if you edit files and use this method, your mods may become outdated eventually as your custom files will always overwrite the newer versions. Might be best to re-make every once and again to stay updated (or when you see your custom mod has been updated backup/copy/paste text/edits into the newer version and copy paste over your old one.)
But this means you don't have to update every Aslains pack that doesn't update your choice of mods