[TxMt] Missing characters in Digest messages

[Alan Goodwin]

I've been on the mailing list for a month or so, reading the Digest in Apple Mail.

Almost every post is peppered with question marks, singly or in groups. These are clearly standing in for other (un -decodable?) characters. This makes it very difficult to follow a discussion. 

Everyone else seems to know what is being said, so what am I missing? 

Sincerely,
Alan Goodwin