Hi, this faucet was in our condo when we bought it. The brand isn't printed anywhere that I can tell. The problem is that the sprayer button on top of the removable spout, when pushed down, stays down and will not spring back up. The spring is in there but is either not strong enough to push the button back up, or something else is wrong, making the button too tight. Would like to know if it's fixable or if I need a new faucet. But need to know the brand first..Thanks!