Some Nucleus+ Q's

Hi,

So I just set up my new Nucleus+ and imported 120k tracks from 8k albums from a Sooloos FLAC export stored on a QNAP NAS. Everything went remarkably well with a few small hiccups. They are as follows:

Every 45 minutes or so, the Nucleus would spontaneously power down. I suspected overheating (although it didn’t feel that hot to the touch) so I moved it from the enclosed cabinet in which I’d set it up to an open shelf and the problem seems to have gone away (it’s been powered up all night now). Given the enormous heat sink encasing the unit, could that have been the issue? Or should I suspect something else?

A tiny number of tracks (around 50) failed to import due to “i/o error.” Yet those tracks DO exist in the library and I have verified they are intact. How can I ask the Nucleus to “try again”?

Quite a few albums have no artwork, even though many of them are not obscure. Is there a ways to ask the Nucleus to look for more art?

Thanks!

Hal