I have an icetoolz floor pump. The return valve recently stopped working due to minor influences (kids thought it would be fun to block the outlet and see how much pressure they could build up). I'm wondering if anyone has any experience with one of these? I've managed to open the top seal, but can hear air escaping from the valve between the pressure gauge and hose, and I'm wondering if this is something repairable. I can't open up the bottom section though, it looks like there's some sort of clamp across the bottom section and not sure how to release it. I'm unable to pump shrader valves at all, but can pump up a presta without an accurate gauge reading - I'm guessing that presta's are locking on the valve side when pumping. This is the product: http://icetoolzusa.com/index.php?route=product/product&path=84_102&product_id=166 Gooi weg, or worth a repair attempt?
