In late August, I took a poly for an FBI support position. I told the truth on all counts, but after reading this website am somewhat concerned about passing. The notable points from the test, that I have seen others highlight are:

after one chart, the tester asked if I had anything to add. I said no, and he asked "even regarding <specific question>?" I also said no, and there were no follow ups. 

after another chart, the tester indicated there was an "artifact" and he was going to run another chart. at the end of this (which turned out to be the last chart overall) there were no follow up questions. 

after the conclusion, all he mentioned was that the results would be sent to HQ, and I would hear back if the results were negative in a few weeeks. there were no questions regarding any answer given.

are these signs positive?

thanks for your time.