Does 到了现在我才清楚了解当时的情况 imply that the situation is completely clear, or just that it's clearer than before?
"到了现在我才清楚了解当时的情况" means "the situation is completely clear for me now" 

For "Now I understand more clearly about the situation back then" It should be "到了现在我才(更)清楚了解当时的情况"

It implies you had some understanding back then, but now this understanding is more clear. 

I did not read your English translation. My editing is totally based on the impression I got from your Chinese writing.