Character and Fitness Question

Chipster Study

I am an older applicant and am going to hire a professional service to research my background for any character and fitness issues. I had a situation come up that caused me to have significant retrograde amnesia that is likely not reversible. My family and friends tell me there is nothing major in my past in terms of C and F, but I will not be able to vouch for the absence or presence of some of the smaller issues myself that could have happened in college, etc., which is now many moons ago. Should I write a short addendum explaining such?