SuperOcean 44 regulation

[PRabbit]

Bought this watch from Jomashop a few months ago. So no factory warranty. I like the watch and has been great. But it’s consistently been running almost +15sec per day. I didn’t mind it at first. But since I’ve received a couple other watches that are running +1 per day, it’s brought some negative attention to this watch.

First things, I know the +15 is well out of the COSC specs it claims to have, but I know that is for the movement itself before in the case. So what is a realistic expectation for this watch and is +15 unacceptable? And if so, would it be worth sending it back to jomashop under their warranty to have it regulated? Or would it not be worth the risk of them damaging it further just to slow it down by 10 seconds or so?

Thanks for the help!