you did have a good effort, you were much faster on sunday than saturday.
As for a defiinition of blocking: I look at like this, you may disagree, the lead car has the right to "a line" he may not make a second move or alter his line to hinder someone progress. I also believe that this would mean coming down on someone in the corner to stop his advancement. while i agree that the inside line is not always the fastest line, the lead drive has that right to run that line. thats why you will hear that there is a race line and a fast line. now I can't say about sunday, but I know how my dad races, and my bet is that he did not make a second move or changed his line to hinder your progress. I also know that if you beat him to a corner or line that he would give up the line.
that being said, I know my dad is going to drive inside to hold postion in the race. I saw twice this past weekend he gave the corner to the winner. i think that the different cars and their strengths are what make I.T. racing great. we may have great torque, but our braking hurts us and the opposite is true for you. thats why we race to have that type of challenge.