Been installing two new tubes since yesterday and still not done. I installed one yesterday and it leaked. Broke it down to find a pin like hole then patched it. I figured I pinched it. I installed the other one and it’s fine. This morning I checked the patch and it’s fine. I installed it and went to fill it up about half way then realized I put the tube in backwards because the valve stem started pulling itself back in. I broke it down again turned the tube around then installed it for a third time. I started putting air in and it leaks again. I broke it down pulled the tube out and found another pin hole like before BUT this time on the opposite side of the tube same place. I’m thinking because I had the tube backwards this is why it got punctured in the same place but on the other side. I spent twenty minutes looking for something in the tire and checking the inside of the wheel for a burr and found nothing. So I quit for the day around noon. I’ll cover all the bases again tomorrow hoping I find out what is puncturing this tube. I hope your heads aren’t hurting reading all this.