DRB Stuff F40PH Horn Issues

[UPSD70ACe]

Hi say I have the DRB Stuff F40PH set the freeware. With phases 1-5 okay so I noticed the horns inside the cab. An outside the cab are different sounds has anyone else had. This same problem what can I do to fix it.? Cause I like the outside horn to be. The inside cab horn so they both sound the same.