Board Thread:Theories and Speculation/@comment-31611719-20170612220745/@comment-734582-20170613183740

Lorenzo.r.1st wrote: yeah, jiraya doesn't joke bout shit! though, im still trying to find that thing that he said was supposed to have all types of curves and shit. its been hard, so my rasengan training has been very slow, tbh.. I don't think the rotational aspect is a big deal, since any skilled shinobi would work their way around it and a jutsu of that level would probably not suffer from a slight rotation bias in the chakra pathways.

It's simply that Naruto sucked, and so it required Jiraiya to take more stuff into account than usual.