Navdata coordinates to UID

Hi,
I'm working on my FS4 - Sayintentions Bridge, and planned to make a Simbrief integration, at least for the FROM/TO page on the CDU (now for the A320).
I'm very close to the aactual UID conversion, but since some rounding problems and different navigation data, I can't make it work properly. Even 1 bit error, and the CDU can't give me the Departure and Arrival runways.
Currently I realised that the logic is a 24+24+16 bit data. Lon/Lat/Flag.
Is there any chance that you can give me the original source for your map? And maybe the distortion for the mercator map?

Some examples from the conversions:

EBBR (Brussels)

• Aerofly FS4 Original (main.mcf): 83305EAA8BAD0500 (Baseline / Reference)
• Internal ECEF + 12th Degree: 83305EAA8BB50500 (Difference: +8)
• Real-World AIP / Navigraph + 12th Degree: 83305EAA8BB50500 (Difference: +8)
• External Database (GADB) + 12th Degree: 833304AA8BE20500 (Difference: +53)
• Pure Web Mercator (Standard): 833304AA2FB30500 (Difference: -23546)

EKCH (Copenhagen)

• Aerofly FS4 Original (main.mcf): 88FFF3B02FEF0500 (Baseline / Reference)
• Internal ECEF + 12th Degree: 88FFF3B030000500 (Difference: +17)
• Real-World AIP / Navigraph + 12th Degree: 88FFECB0300B0500 (Difference: +28)
• External Database (GADB) + 12th Degree: 88FFF4B030070500 (Difference: +24)
• Pure Web Mercator (Standard): 88FFF4AFCCC60500 (Difference: -25385)

ENGM (Oslo)

• Aerofly FS4 Original (main.mcf): 87E1C3B6488A0500 (Baseline / Reference)
• Internal ECEF + 12th Degree: 87E1C2B648AB0500 (Difference: +33)
• Real-World AIP / Navigraph + 12th Degree: 87E1C2B648AB0500 (Difference: +33)
• External Database (GADB) + 12th Degree: 87E4B1B645830500 (Difference: -775)
• Pure Web Mercator (Standard): 87E4B1B5EF350500 (Difference: -22869)

LIRF (Rome)

• Aerofly FS4 Original (main.mcf): 88B406A103B20500 (Baseline / Reference)
• Internal ECEF + 12th Degree: 88B405A103B30500 (Difference: +1)
• Real-World AIP / Navigraph + 12th Degree: 88B405A103B30500 (Difference: +1)
• External Database (GADB) + 12th Degree: 88B697A106DB0500 (Difference: +809)
• Pure Web Mercator (Standard): 88B697A0CA2D0500 (Difference: -14725)

Quote from Jet-Pack (IPACS)

The database doesn't use lat/lon it uses world grid units, that's Aerolfy's own coordinate system. Values range from 0 to 65536 in both directions easily tiling the entire world in square textures with a factor of 2. - So lat/lon 0,0 maps to 32768.0, 32768.0 in world grid. X maps to longitude linearly but Y has a tan() function in it. lon/lat (E/N) is in radians here.

Code

uint64 UidFromWorldGrid( const vec2d& world_grid )
{
  const uint64 x = static_cast<uint64>( 256.0 * world_grid.x + 0.5 );
  const uint64 y = static_cast<uint64>( 256.0 * world_grid.y + 0.5 );
  return ( x << 40 ) + ( y << 16 );
}

vec2d WorldGridFromLonLat( const vec2d& lon_lat )
{
  double x = tm_clamp_cyclic( lon_lat.x / PI, -1.0, 1.0 );
  double y = lon_lat.y / PI;

  constexpr double WorldGridConstantA = 2.3311223704144;
  y = tan( WorldGridConstantA * y ) / WorldGridConstantA;

  x = 0.5 + 0.5 * x;
  y = 0.5 + 0.5 * y;

  return { 65536.0 * x, 65536.0 * y };
}

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Thank you. Works like a charm.