We have the same issue in Ireland with our V80. Been like it since we got it 2 yrs ago. Normally I'd get about 100k-150k before needing to replace, other times it can be as low as 30k. If I run a large volume black job I generally need it replaced straight after. Our techs have a few adjustments they make to the unit before they install it, the latest being a sort of cloth they add. Apparently in Asia where the machine was developed they rarely used coated stocks so issue didn't arise in development. The tech say its still a problem with the V180 although not as bad, they beefed up a few of the components.
Last time they gave a run down on how to change it so I can just order the part myself and replace, although they didn't show me the adjustments they make to it. Our techs have no problem being called out for it no matter how many times we call as they know its Xerox's mistake. They just say to keep the nudge rollers clean and wipe the BTR roller every so often (which I never remember to do).
Can't say we've had a problem with drums, about 6 months ago a tech when he was in did check the reference numbers on the drums we had as he said a bad batch did come in but I've had no problems.