I'm wondering if my tubes lose pressure too quickly. If I pump up one section to 2 psi within the next 24 hours it will lose 3/4 - 1/2 a psi on my gauge. The adjoining tubes were deflated so maybe there is a small air leak to the next compartment which under normal circumstances wouldn't be a problem I suppose. But assuming otherwise is a drop from 2 to 1 1/4 psi within 24 hours a sign of a major air leak? The tubes do not completely deflate but probably taper off to less than 1 psi if left sitting for a long time (2 weeks). Or is this unavoidable for tubes of such age? I'm talking about my 1991 Avon Searider of course
. Is it porosity or just too many small leaks through seams and such?