GP7u Markings Removed
I chose to leave the "Santa Fe" lettering on the long hood alone as well as the main blue/yellow color separations behind the cab and on the battery box. After all these are intended to represent former Santa Fe locomotives so if upon close inspection of the finished Y&MV locomotives traces of Santa Fe are visible, it is OK.
What I did choose to remove were the cab and rear numbers as well as the classic Santa Fe "Cigar Band" logo on the noses. Recently I saw a YouTube video by Josh Clark, a.k.a. NSmodeler24, which introduced me to a new method of removing painted-on locomotive numbers. That video is linked below in this posting for reference.
Josh's method is remarkably simple. All that needs to be done is application of a decal setting solution to the numbers for about five minutes. It is important to be vigilant and use a brush as necessary to keep the markings covered with the solution. Then a simple blot drying with a paper towel to remove excess liquid is required to prepare the surface for number removal. Finally, Scotch Tape is applied firmly to the surface. When removed this takes the numbers with it!
These locomotives are now getting close to being ready for primer and paint!