As many indicated, this was in part caused by the ballast in the tube, but also in part due to low air pressure. It has been almost 2 months since your post that you got ur valve stem in a better position.
I suggest that you set a schedule perhaps the 1st of each month to check your tire pressure. That should be much more often than you need to add air, but it would only take a few minutes to check all 4 tires.
Congrats on getting it realigned!