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I've managed to cut/tear/damage both valve stems on my bike in the past two weeks, possibly from running over curbs, tree roots and riding/jumping down stairs. They are puncture resistant 26x1.9-2.125 tubes with thicker rubber, in 26x2.0 bontrager h5 hard case lite tires on steel rims.
How can I reinforce a rubber schrader valve stem and what other ways can I prevent this form happening? It essentially trashes the tube with barely any damage.
