**Uh, yeah.  You again with your "pure speculation" comment on anything that bursts your bubble about this guy being straight.  Well, go tell William Higgins, Mike Horner, and Tommy Byron (all of whom have worked with Peter North for YEARS) that they're merely "speculating."  In answer to your question, the way we "know the gay films weren't all filmed all [sic] during the same time frame" is that the fucking director (William Higgins) says so.  Are you finally bereft of stupid comebacks, or have you got another one up your sleeve?