Default My Orbit XDA O2 keeps loosing GSM signal

Hi guys, I joined this forum recently and I have found it very helpful. I an XDA ORBIT O2, when i got it it was on WM5 and it once in a while lost the GSM signal and at times even when it shows full strength, I am still out of reach. Bluetooth also doesnt work, it keeps saying Hardware problem. I upgraded my rom and am now on WM6 and even though the experience is great, it still have my GSM and Bluetooth problems. Anyone, please advice...
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