Took a picture of my patched tubes based on your advice....almost the same spot, all 4 tubes. Tried to post it, but did not have 10 post to qualify for posting. Any trick here?
Anyway, went thru the tire and the rim, nothing to be found. No puncture marks on the tire no inside neither inside.
My pictures are @ EG 2022-06-15 of the Gallery. Thanks for your tip.
Last edited by geneg; 06-15-22 at 12:22 PM.