Just finished a RB 511 and went to Dyno .
First a big thanks to Dwayne and Andy F for all the help/ advice / work.
Got to Dyno - Holley 950 Ultra XP.
Felt it was over jetted but, let it ride - let Dyno tell us.
Carb was " all over the place" .
Had to keep adding jet , espescially drivers side- jet changes kept making " less than expected changes" - like your chasing a vacuum leak.
No leaks could be found.
Ended up at 106 on drivers side- 101 on passenger- that's crazy for a bb mopar at this level.
Dyno operator stated- I just went through this- carb is bad.
Found three boosters loose.
Long story short: came home, researched, called some carb guys- these carbs have a known issue- being drilled poorly .
You can put a light through meter plate body and see light around/ behind the boosters.
If I had " asphalt tuned " rather than Dyno- likely hurt motor .
If your buying one- please have it checked out before running it.
Just my take.