If it were me, given the growing reports of issues with screen ghosting, shaking, and flickering with the SP4, I'd swap it out as soon as I could.
If you bought it from Microsoft, you have 30 days for a full refund, and I would recommend returning for a refund as opposed to exchanging. The reason is that they use refurbs and not new machines for replacements. If you are in the US, you can go to a physical retail Microsoft Store https://www.microsoft.com/en-us/store/locations... and do this transaction there. If you purchased somewhere else, you still may be able to return for a full refund and repurchase. You CAN contact support for an exchange, but that is the least preferable option in my opinion because you would get a refurb, and unless they agreed to an advanced exchange, where they charged your credit card and shipped you a replacement before you returned yours, you WOULD be without your Surface.
If you go to a Microsoft Store and speak with a store manager, you MAY be able to exchange for a small up charge for the newer Surface Pro 2017.
Please don't shoot the messenger. I hope this is of assistance, and if it helps, please DO mark as answer.