I'll tell you this much. I ordered The new mini chimney, and asked if they had free shipping. she said she'd wave shipping for me. Before I got off the phone, I asked about the ash catcher tabs for an OTS, she just threw them in for free.
I know some folks here have bad luck with Weber customer service, but I'm not one of them. Give them a call, worst thing they can do is say, "No".
22.5 OTS(H), 22.5 OTG(DA), 22.5 Daisy Wheel Kettle(EE), NBBD, UDS, MUDS, 6-burner gasser