if that was me, i would have said. I'd ask you for your patient. I'll show you what i know. we work through the aikido basics. and we can find the answer to that question and other questions you have together. and if the answer is beyond my capability, then we can ask my teacher(s).
In my opinion, this would be a respectable response, though not the way I would handle it, but this, also IMO does demonstrate a level of confidence and competency that the statement of "I'm just a shodan." does not convey. I would interpret this statement as a cop out or excuse. It's like saying "you can't expect much out of me because I'm only a shodan."