2/26-2/27 the backends were not very snappy. It played fairly long, but not heavy. I used a 900G Bounty. It's drilled with the pin in the ring, MB out (5.5x3.5) with a weight hole 2" down on the VAL. It is polished over box finish. I was able to play most of the team event 15 (arrows) to 10 (breakpoint). I was amazed that I did not have to move around much. Day two played very similar, but I was not throwing it as well, so it seemed a little squirrely. I started playing the same ball/same line, but ended up going 12 to 10 with a rico'd Creature Pearl.
It was my first time to Nationals, so I guess I should not be too disappointed with my 1640.
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Jon (in Ohio)
aka: Rico Swervé~