I have a paper copy specifically on the WB700 and it only says replace does not give the size. The OEM part retailers also don't give you a size, only a p/n. Maybe there is a way to decode the p/n?
Searched the 12 pages of the carb database and not a single person posted about running a single 38 or 44 on a 701 regardless of mods. Most singles were 46/48/49
Anyways I got my question answered, just curious how to look up the info in the future