spring position, rear stand catch

[Steve Swan]

i need to drill holes in my rear fender to fit the spring for the rear stand. i believe the spring mounts to rear fender with 3 round head screws. in lieu of approximating the position of the stand relative to the position of the spring, i would appreciate knowing the distance from the bottom edge of the rear fender to the bottom hole in the fender the spring attaches to. Thanks in advance.