Bob
the rods you have bought are designed for catching small carp on the float at commercial venues.
fishing 4 to 6lb line for 3 to 5lb carp, float fishing pretty close in.
They are a general purpose rod, more in the 'power match' fishing type bracket and although designed for catching small carp, they are not carp rods in the truest sense.
The confusion for novice anglers is that traditional match rods are designed for light line fishing, match style.
Carp were never seen as suitable targets for match anglers, but with the advent of overstocked commercial carp bagging venues, then this has seen the proliferation of rods to cope with this style of fishing.