I did some playing around by replacing the textures and it appears that the air file calls for the TDS737MAX2015_WINGLET_T.dds but the file included in the textures is TDS737MAX_WINGLET.dds.
I know this because copied the TDS737MAX2015_WINGLET_T.dds that I found in the "texture.shared" folder to a new folder, then I repainted the winglets. I converted it to a dds and placed it in the aircraft texture folder and it worked fine. The original file DS737MAX_WINGLET.dds is still in the folder but causes no issues.
This tells me that the air file could be calling for the TDS737MAX2015_WINGLET_T.dds in all the liveries. This was a lot of work since I had to decompress the dds and save it as a bmp, modify it and re-save it as a dds.
I still don't know how to fix the white nose gear doors.
Could it be possible for Rikoooo to contact the developers and ask for a fix for all those liveries? I would greatly appreciate it.
Thanks in advance.