Thank you, gentlemen...and Ed. For anyone else who might pick up this thread in the future, I also spoke to a girl at Gaugemates who told me they had discontinued producing 20ga to 28ga adapters due to consistent problems with splitting and shells sticking.
Reading this forum has taught me to be too concerned about my fingers to shoot the gun "as is". I knew of the defects at the time of purchase, so it was sort of a dice roll but I don't think I'm in the red on it, should I decide to sell. At least not by much. I think the full length tubes are the way to go.
