Filling tires - user error or different bit?
I'm trying to fill up the tires on my recently arrived bonnell 775 MX and the stem is not fitting in the portable battery powered tire filler I have, nor is it fitting in the provided pump.
I'm not familiar with this design... It looks similar to the car tire stems but gets narrower towards the end and has a metal bit that can be unscrewed to remove the pressure.
I've tried using different bits I've had and I've tried looking at 3 different setup videos but none of them really made a deal out of filling the tires.
What am I doing wrong or missing here?