The backpack straps on my Christopher padded double bass gig bag have finally given up the ghost, just as festy season is properly kicking in, and I really need those backpack straps to lug the bass across muddy fields! I've bought myself a shiny new gig bag, which means that my old bag is surplus to requirements and is just taking up space.  Aside from the knackered backpack straps, all the other handles and zips, etc. work fine.  I've had it for 11 years of regular gigging, so the exterio