Just replaced one. The feet were difficult to remove as they were glued over the screws. In the end I don't think they are even needed except as a cosmetic device. Be careful with the scroll wheel, it is poorly designed and could easily break off, mine popped off but was not damaged, just had to finesse it back on and be careful replacing the cover. Got two batteries for $24 through Amazon and a third party distributor called BatteriesInAFlash.com. And no shipping charge. Very happy.