I have been to there location in Ponca City several times over the last several years. I recently purchased a 55 and have notified my machinist not to build me an even bigger offset.
I tell you this because I deal with customer service issues on a daily basis with different clients around the country. Some days calls are returned quickly and sometimes it takes some time. I had a question for Tony the following week after I received my 55 and I called on a Monday at 09:30 and received a call back at 10:30. All sorts of things can happen in a day to day operation like theres, especially after a Holiday. I really would give them a call and see if they can answer your question. My 55 runs hot but I generally just want ribs, brisket, etc. Temps that high, I will either live with or drop it off and let them look at it.
Trust me after meeting these folks and talking to them on the phone they really do want to keep you happy.