Better way to solve the problem:
Create default users hive with the keys I want and export to a shared file, \\master\files\keys.hiv
Script (\\master\files\regfix.cmd):
@ECHO off
mkdir C:\temp
copy \\master\files\keys.hiv C:\temp\
reg load HKU\def_user_template c:\temp\keys.hiv
reg load HKU\def_user_local C:\Users\Default\NTUSER.DAT
reg copy HKU\def_user_template HKU\def_user_local /s /f
reg unload HKU\def_user_template
reg unload HKU\def_user_local
del /f C:\temp\test.hiv
Command:
clusrun /all \\master\files\regfix.cmd
Now all new accounts get the keys needed. Since all my users are new, this works.