All the 4813s ive seen available to the consumer market have the shorter wheels and pinions, making the unsuitable for reps.
Ofries sell them , but like i said, they wont work in our reps as the hands will drag the dial
The Cartel has those 4813s with the long wheels in some of their reps, and Sead has access to those too, but im not sure you can get just the movements from them.
Your best bet will be to replace it with a 2813 which has the taller wheels, but of course, it also has the slower beat
