The RP1 uses the RB101 arm that has the 3-point mount.
The RB250 arm uses the main post with a nut on the bottom of the table. You will not need to use the 3 holes that the RB101 uses. You can plug them or just leave them, but they will be visible with the RB250 arm installed.
VTF is done the same way on both arms.
The RB250 arm uses the main post with a nut on the bottom of the table. You will not need to use the 3 holes that the RB101 uses. You can plug them or just leave them, but they will be visible with the RB250 arm installed.
VTF is done the same way on both arms.