Talked to Paul at Altoona....
It's easier to convey the feel than quote anything direct, but the GP20 has been an ugly episode for everybody. There are some floating around there after they have been 'fixed' by Atlas, for whatever that meant, but the relationship back to the home factory seems to have left a mark.
Yes, the speaker is in the fuel tank now, like the GP40. And I got to show Paul my CF7 conversion and put it in his hands, but that didn't offer much but sympathy!