I'm going to disagree with you there, but I think it's the same disagreement we've had in other threads.
The By The Book overtime rules include interpretation 3.1.1 Sit C (page 90) that unequivocally states that the try is the succeeding spot.
The 8-2 rules and 2-41-10 allow for the succeeding spot to be the subsequent kickoff, which there is none in overtime. The edit to 8-2 this year that allows enforcement on the "try or succeeding spot" is now redundant, since those are the same thing by default.
That being said, all OT procedures are state adoptions, so your state may offer specific guidance to allow enforcing on the following series.