Rogan thinks he already has it:
My Goodly Mr Mark,
I am being most sorry for a delay in replying. I have been being on a pilgrimage to the birthplace of Vicbitta, a most auspicious local God, worshiped most assiduously in temples being positioned through out the city.
But I am being here now and am writing most earnestly in answer to your letter.
I am being most perplexed about moneys that you are talking about. I am thinking that Mr Newbery has already been paying you these monies, is that not being rightly so?
Please be advising me of this matter of the utmost of urgencies.