First time having manual brakes, are mine bad?

In the last 50 years I’ve had many Mopars. Some were drum/drum and some were disc/drum brake cars. Some with manual brakes and some with power brakes. They all used factory parts/combination and they all stopped without issues. The last one that I did was a disc/drum conversion on my ‘69 ‘cuda and it used everything from a ‘75 A-body and stopped perfectly. My next conversion will be on my ‘64 Belvedere which will use ‘75 B-Body parts.