I found the ti-83 rom online.. and I put it on my phone.. it loaded correctly but I noticed that the skin is a bit messed up.. like the left side is a bit off and it doesn't use the full "screen" on the calculator.. which is annoying because it's already small.. and by it not using the full screen it's even smaller so it's a bit harder to see when you graph and stuff.. can you fix the skin? or at least guide me on how to make it use the full screen? thanks.