That's interesting. I never had a problem ploughing through Pynchon, and as I mentioned I bounced off Ulysses in my early 20s. I am right now in the last pages of my 1st reread of Gravity's Rainbow. I have to say I prefer Joyce now. And I think I liked my recent read of Against the Day over GR, an unexpected development.
Gotta say though, GR is still awesome. Fearless.