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eschlwc - My bad. I thought it was 30 but may be 28. I will have to dig it out as I cannot find a decent, reliable tooth count from IRD. Senioritis. In any case, I can only run the largest cog on the small ring. Sorry about the confusion.
To keep the upper jockey wheel from rubbing on the large cog, I had to adjust the location of the axle with the axle alignment screws. It was at the limit for changing chain link count, couldn't make it longer or shorter and still be in the range.