SOPP409: Getting a little frustrated with the Bach Dorian Fugue

This question was sent by Jeremy, who is on the team of transcribing fingering and pedaling for us. So he writes: Finished transcribing fingering for BWV 541. Normal practice routine. Am getting a little frustrated with the Bach Dorian Fugue. The Toccata is in good shape, with two transitions requiring some attention, but the fugue is simply being difficult. Trying to speed it up: working on two pages a day, starting at half speed, and then working it up. There are moments that aren't a problem, but there are an equal number of sections that I am having getting up to speed. Will try again tomorrow. Just venting.