Thanks all for the replies.
In response to some comments:
ritelec, I believe you have asked if I play guitar, unfortunately I do not but wish I could, I have no musical talents. I'd like to say maybe someday I could learn but...that could take a very long time and I think I'd rather be out fishing instead
TKB, thanks for the link, yeah 3 #4's in 1" but a egc is not allowed? Blahh
With #4 and larger conductors a conduit body is required to have the same dimensions as a pull box, 8X for straight pulls and 6X for angles. If the conductors are listing on the inside of the conduit body then you can use it as a pulling point even if it doesn't meet the 6X and 8X rules.
Rob, that's it! That's the wording I was looking for. Before your post I must have read close to 50 posts on the topic and no one put it as clear as this, you should be an instructor. Sooo, looks like I'll have to upsize to a 1 1/4" C and reduce it to 1" using reducers or get one of those mogul conduit bodies. (Read about them but never seen one).
To clarify, I will be pulling three 4's, a #8, and 5 #18's (Extending a generator to transfer panel feed). I'm thinking I'd have roughly 400 degrees of bends here, I believe I could pull it straight through the C so I wouldn't have to loop it back in and out in order to make the pull. Sound good?