Never mind your post triggered something and now I have adapted the buttons for vanilla HSFX703 (not expert mode) to work with the sounds in Tiger SFS files unfortunately the flyby need more work because involve manipulation of the class files.
Surprise while working at my adaptation I searched my IL-2 warehouse (4 external HD) and was able to retrieve a complete UV3 for HSFX703.
I don't have the slightest idea were I got it from and the author as there is no readme.
I check it out quickly and apparently works well with Vanilla 703. Is complete with normal and expert mode buttons that are very similar to the one that I had assembled.
Thanks to the anonymous modder and if anybody recognize his work just let me know and I will add all the proper credits.
Please take it as it is and I am not able to provide much support and naturally no responsibility for any possible mess up.
Feel free to do whatever you want with it.
here a download link
https://www.mediafire.com/file/rxdfxvk64864427/_Tiger_UV3_For_HSFX_7.0.3.rar/file