Technium will have beaded rims. They're not that old. You've got something with the tire or rim. Is the tire seating properly? Are there any bulges as you get more air in the tube. If so that'll pinch the tube every time. Older tires might not be seating when they inflate.
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“Life is not one damned thing after another. Life is one damned thing over and over.”
Edna St. Vincent Millay