Classic over carburetion problem?

I ran a Holley DP spreadbore "TQ replacement" on my last 340 for a few months. That carb had thee best idle and best low end of any Holley I ever had including a 625 BG/Demon. And it was a beater, nothing done to it but bolting it on from a $30 swap meet table.
I got one of those spreadbore Holleys direct from Holley that was a refurbished carb. It works great on my daughters Dart with 360. Funny thing is, on the Holley website, the listing clearly stated "not for Chrysler applications" for some reason. Maybe Holley corporation doesn't know everything. Haha