Originally Posted by Andrew R Stewart

Is the "little lock" you mention the knurled thumb nut at the end of the valve? If so it sounds like you broke it off during installing tube #1. It also sounds like this thumb nut is still rattling around the rim. Like a nipple, things this size can enter the box area of rims and be a pain to remove. Usually I'll position the valve hole down and shake, rattle and roll the wheel so the item inside can end up at the bottom of the wheel and hopefully exit out the valve hole. Sometimes I'll pull the rim strip to give more exit points.,,,,, thank you Andy and yes indeed that little knurled nut is what I'm talking about but I've changes plenty of tubes and I don't bo in a rough manner I think that nut thing was not set right but thats it ,,,,

One point more- It reads like you pulled the tube valve out (actually in to the wheel's center) of the rim during the mounting. Doing this can result in the valve being fully seated in the rim's interior. This often prevents the tire's beads from fully settling down into the rim. A very common mounting mistake that can make the tire have a hop at the valve area or even a blow out as the tube squeezes past the tire bead and rim. You want to push the valve back in the rim after the tire is mounted so the valve base is not caught under the tire's beads. Air pressure alone will push out the valve as much as is needed. Andy.