I also have memories of my father from a younger perspective. I too would like to learn more about him from my perspective now, to ask questions and have conversations i would not have as a child. However... perhaps the fuzzy memories of a child are more flattering and leave the adult mind with some wonder compared with the more lucid and analytical memories created by your present self.
My dad is quite creative and technical in a variety of ways, he shared some of that with me when i was young, that provided great inspiration for me and gave me some happy memories of the time i spent with him. The silly thing is that he's still alive... but has always lived far away, now further than ever in an isolated part of another country above the clouds (literally not metaphorically).
I guess the nugget of wisdom to be extracted from this is: memories are good, so spend your time and effort being together. The better the time and the stronger the emotion - the more potent and lasting the memory will be.