I've been using Schrader valves forever, including my tubeless setups. I ordered a new bike and it has Presta valves and while my first inclination is to chuck them and drill the rims for Schraders I'm open to being persuaded to keep the Prestas. The main issue I have is that my system for injecting the Stan's sealant threads right on to a Schrader valve. That plus the larger diameter makes sense to me for injecting the sealant. Thoughts?