I just want to be able to run blinky 17.5 and 13.5 boosted without changing my spur. So I would need to run such a small spur for blinky with a large pinion, and by keeping that small spur, I could run 13.5 boosted. But if I keep the large spur, I won't be able to achieve the rollout needed for blinky 17.5. Does that make sense?