Re: Changing cover on Fender Vintage Noiseless?
I presume they're just normal covers like the Dimarzios on my Malmsteen. Covers are easily replaced (I didn't like the Dimarzio logo). But on stacked hum cancelling singles, the covers are usually double the size of normal pickup covers. So I'd try to call Dimarzio and get the larger covers.
The smaller covers fit, but the spring or rubber tubing holding the pickup in gets too compressed.
Take the pickguard off, remove one of the pickups, see if you can remove the cover. If you can, you're in business