R.M.
This is my opinion: hopefully you will find it useful --
In my experience, the most traumatizing events of my life are the ones I remember the most vividly, and I've had a few. I remember being molested quite well.
The "repressed memory" theory that was so prevalent a couple of decades ago has been mostly debunked, although obviously, no one can say for sure if people have repressed memories or not. After the repressed memory fad was over, it was discovered that most people's "repressed" memories were fictions, invented by their brains later on.
From my experience, if you were molested, you would remember it. Other than the fact that this guy taking you into the basement was definitely odd, do you have bad feelings about that memory? My mother actually had a male friend (not the molester, another guy) that would show me and another kid pictures of naked people, when I was about 11, and to this day I remember it as being kind of fun, not bad. (And I'm really not perverted these days, I promise.)
I think you should stop your search. Why are you trying to dig up dirt that probably doesn't exist? There is no reason to make yourself feel bad. If you are trying to find out just out of curiosity, then go ahead, but if you are searching under the assumption that you will discover some molestation that you don't remember -- let it go. It's not healthy.
Not everything in our lives needs to be dissected. Sometimes being happy and moving forward is the best way to go.