Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148a Safari/6533.18.5) My battery on my 3GS is dwindling to the Point that is does not hold a charge very well. I was thinking about ordering a new one to replace it. While looking at the instructions on ifixit.com, I figured I might as well replace the back cover and maybe the home button while I am at it... For anyone who has replaced their 3 gs battery, or a 3G battery, can you tell me- after reassembling the phone, is it "like new" or is it wonky where there are gaps in the outside shell, or is it impossible to fit together the way it came from the factory, etc.? If reassembling the thing is going to make it permanently puffy or not fit together right, I wont bother. Thank you for any thoughts or opinions.