Are you running a diff or one way in the front ? with the one way you will find they are a bit harder on the driveshafts as the drive cups slide out at times, try adding a little foam inside the cup to stop them moving a little.
Also looks like you are using the older style of drive shafts the newer shinny ones are not wasted near to wear the ball/pin. Until the newer type came out i would bend 1 to 2 driveshafts per meeting.
If you are stuck getting the parts, i can sort you out once i get back from the GP.
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Jonathan | Atomic-Carbon
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