I can definitely relate. I think that when you first start Orgo, the material is just so different from anything to which you've previously been exposed, that it can knock you off guard. By the time you've reached Orgo 2, although the rxns are more complicated, you've developed enough fluency with the subject -- "chemical intuition," as one of my professors used to say -- that the topics just seem to come much easier. I don't know if you've had the same experience. . . but in Orgo 2, when I sat down to study a mechanism or rxn, I found that I could look at the reactants first, and then figure out the mechanism or product just based upon the concepts of nucleophilicity, sterics, etc. that I learned in the first semester, before going ahead and looking at the answer.