1. Checked barrel screws.
2. Hand tightened shroud - not sure what you mean by "smoked down".
3. End cap and Gaska shroud extension are tight.
4. No signs of clipping.
5. Haven't tried feeding pellets singly, but I have 2 clips, and the scattered groups are occurring from both.
I'm not so much worried about group size right now. It's giving signs that it can stack up ammo, but these little clusters of decent groups are constantly shifting. Two or three stack nice, then things drift. I had read in some forums about barrels shifting with changes in tube pressure, and this seems to be the case with me. I plan on going over every single bolt today to make sure they're tight, but all of the major ones (scope and breech) that are the usual offenders are snugged tight. What I'm hoping for is someone can tell me what I need to do to keep the pressure from affecting the barrel. I know that with some Discos this was a problem, and it was remedied by putting set screws in the barrel band to keep it from shifting. Unfortunately, this isn't really an option for the P-rod.