Carter (Edelbrock) tuning questions.

Some of the Eddy carbs are very lean on the primary side right out of the box.
Any change you make in the rich direction will help. If your kit has richer (smaller) rods on the cruise step, try them first.
If you can't read the numbers on the current rods, check the size (diameter) with a caliper.
If the rods in the kit aren't richer, you'll have to change the main jets.
Try the next richer size, be conservative since your richening the whole primary side.
If you're new at this I'd take the carb off and do it on the bench, you don't want to drop any small parts on the engine!
Let us know how you make out.