If the only problem with your current pump is the head, why not just buy a new hose? I like the attachment of lezyne pumps and my nashbar pump was ok but the plastic head was taking some abuse from metal threads, so I just bought a lezyne hose with their head and put it on in the place of my old hose. Sure it's still a crappy nashbar pump, but it was a cheap fix and it works a lot better with a better attachment now.