Gummi - I hope I am not too late on this one.
Have her buy you 2 26.75 OTGs, and a 18.5 OTS. Then you give me your 22.5 WSM and one of your 22.5 kettles. That should equal 27 I believe.
Of course, I will gladly sell the kettle and WSM back to you at a later date (however long it takes).
Glad to help,
Winz