1. Do you guys with these tanks reverse the petcock so it faces in? I've had one shutoff incident while riding. Reversing the petcock would normally be the cure, but it looks like it might stick out even more if reversed. 2. Do you guys drain the tank between rides to prevent staining as suggested in the instructions? Seems like that would be kind of a pain in the butt. Does it really stain badly if you don't drain it?