10-07-2020, 12:04 PM
If you can see the valve stem you may be able to remove the valve with a valve key. I don't know the thread but at that stage you may be able to get a set screw into the stem so that you have something with which to manoevre it. If the valve stem was slightly mispositioned circumferentially you will usually find that moving the tyre round the rim also moves the tube enough for things to line up properly. You do need luck on your side! If it does not work you are back to plan A I think.