>>The septum is strong enough to become a limiting factor?<<
As the junction of the two CCs, and the point that usually takes the most stress during an erection, the septum can be fairly tough indeed.
>>I may plateau next month if this keeps up.<<
Don’t think like that! Whatever happened to optimism? :p
It might be noteworthy to mention that because of the structure of the penis, usually once the septum is encountered as a limiting factor, that it remains the limiting factor for quite some time. Don’t worry man, although it is fairly tough in some guys, this tissue WILL yield. Just keep adding heat, and apply the necessary forces, and you will gain.
>> I’m too close to my goal to give up though.<<
Never, never, never give up. - Churchill