Wrigley Ticket Upgrade 8/29

CM192536

Hey, anyone know of a way to upgrade tickets at Wrigley?  Tickets were purchased through Ten Club which was then through the Cubs/MLB ticket app and purchased just to make sure I had some.  Now I'd really like to get a better seat/GA but unable to sell these.  Any ideas on how to get a better seat in the house on exchange/trade?
Currently have Sec 218 seats.

Gibson

@CM192536

If you can see the tickets in your ticketmaster account, try the following:
1. Find the seats you wish to upgrade to on the ticketmaster map. Have seat numbers and row number ready.
2. Have your order number ready
3. Call 1-855-985-5000 and follow whatever prompts to talk to an agent. (upgrade tickets is usually an option from the prompts)

If you have all that info and catch an agent on a nice day, you should be good to go. A couple of notes:
-The upgrade fee is $10 per ticket and any cost difference from yours to the new tickets
-I'm 99.999% confident you will not be able to upgrade to tickets that others are trying to sell. You'll only be able to get ticketmaster straight up tickets (you can get blue dots on the seat map and not pink)

Otherwise, you could try selling yours on fan-2-fan or stubhub and then buying new ones. The "benefit" to selling stubhub is you can list below face value. And I hate to be the bearer or bad news, but in order for a timely sale, below face value is your best option.

Good luck.

CM192536

Thanks @Gibson however the tickets that were sold through the 10 Club fan only sale (Bull $h!t if you ask me) but it was through the MLB/Cubs site and thus cannot be sold through ticketmaster or stubhub, was hoping someone had experience (probably a bad one) of this circumstance. 
Good news, I still get to see PJ at Wrigley, bad news I'd happily spend more for a better seat.