Hi I have a crystal Xbox but the screen is glitching and flickering rather a lot. Does anyone know someone in my area (Essex, UK) who can fix it? I'm probably going to try another lead first to see if that's the issue but I'm probably going to go down the modding/chipping route with it as I already have a modchip that I purchased a while ago. I would also like the clock battery removed as I've heard it can cause issues as well.