I remembered after I posted that Pat Downs told me that he and CB had later upgraded the Dell 40 version of that carb kit to overcome the hesitation (apparently, I wasn't the only one). Sorry if I mislead. As it turned out, Blackline did a great job setting up my Dells and I wasn't about to mess with them any more. I'm happy with them right now (even though I won't be playing with the car for another 3-1/2 months). It's Sleepy-Bye time for replicas in New England, now.