Turntable motor noise

I recently bought a Rega System One, which includes their Planar 1 deck. I'm generally very happy with it, but I've noticed a reasonable amount of noise coming from the motor. It's loud enough that I can hear it between tracks and during quieter pieces of music, even when I'm sat across the other side of the room, probably about five metres away from it.

I've taken the platter off and removed the belt to check the noise isn't in some other part of the assembly and it's definitely just the motor. It makes a soft sort of chugging noise. I contacted the dealer I'd bought it from and they've said some motor noise is normal and that it would likely reduce as the motor beds in. But it hasn't.

I don't know very much about turntables and haven't had one since I used my dad's back in the 80s. I'm interested to know from those with a bit more knowledge and experience whether this is normal or if mine might have a problem? Unfortunately I'm not local to the dealer I bought it from so can't just pop back in with it.

Thanks for any help.

Quick update on this. After a bit of to-ing and fro-ing with the dealer (I bought online, which doesn't make things like this easier to resolve) they've agreed to open up a new deck their end and check it to make sure they're happy it's performing as expected, and then send to me to replace my existing one.

I'm really hoping that there's a noticeable difference with the replacement one. The noise is like a soft 'chugging' and it's doing it all the time, not just when the motor gets hot. I'm no expert, but it definitely doesn't sound right to me.