Wondered this myself, the standard looks like it was made to be folded or fixed, and judging by the welds used to make it fixed, if these were ground off, the pin would fit lower in bracket to give extra recline, then weld it back in reclined position. But i was too tight to pay £20 on ebay to buy used fixed bracket to try it. looks possible to me though, if i get a second hand one i will try. or if i buy the reclining folding one i will try on the one i take off.