Adding New Airplanes to the DGen Campaigns

[Dataman]

Dear Daidalos Team,

My apologies in reaching out to you, as this is not directly a question for your work, but I am hopeful your expertise may be able to provide me with some assistance.

I have I-L2 1946 version 4.09 installed on my home laptop.

I have been flying the "built-in" dynamic campaigns the game has to offer and I have a question for you.

For the US Marine campaign, I have added a few newer Corsairs to different portions / sections of the campaign by editing the "planesUM1.dat" file.

All I have had to do was copy the name of the plane I would like from the 'Skins' section and add it where I needed it to go in the .dat file (using Notepad).

I have tried adding Spitfires or Tempest to the "planesGB1.dat" file but the aircraft is not recognized when I start the campaign as an available option though the drop-down selection.

Does you know what I might need to do in order to get these planes in the campaign?

Thank you in advance for any guidance that can be offered.