When to add rods to PeniMaster extender

Hi. I’m currently using the PeniMaster extender and on the site and in the instructions it doesn’t say when to increase/add rods to the extender,so basically when do you increase the size of the rods? Also just to clarify ,the starting length corresponds to the NBPEL right or is it something different? I am doing manual stretching and jelqs as well(not a newbie,don’t worry),but I since I currently do the manual stretches first(in morning) followed by the extender use and then jelqs at night ,my question here is would this configuration of the exercises be the best or would something different(with regards to order) be better? Any and all comments welcome and appreciated so please chime in on this.Thank you.

You add rods when you run out of screw adjustment.

What do you mean by this ,I’m confused?Thank you.

Once you have a set of rods in place, the screw adjustment allows for 1/2 inch or so of length adjustment with those set of rods. So say this set of rods allows for a length of 6.5” to 7.0”. Once you have reached the max length of 7.0 by adjusting the screw and have run out of adjustment, it is time to put in a longer set of rods and back the screw adjustment all the way down, so now you can have a range of say 7.0” to 7.5 inch.