Your welcome Rick. It helps tremendously.
You best bet if you really want to extend your life with nets - is to reduce the net concentration by adding nic base. If it were me, when I started using Rayon I would cut the net by 25-30%. With rayons increase in flavor purity you can get away with it and still have good taste.
Try it out if you want to double your coil life before maintenance, once again.
Another key to the longest lasting setup is using the minimum amount of flavoring to produce a good taste... Realize it will take a day for your buds to adjust but then you'll be like this is still good.
I find excess flavoring to be a crutch of juices, and even possibly
vaping in general. Excess flavoring can cause various issues besides what it does in your atty - like flavor burn out, vapors tongue, and taste bud over sensitization. Some artificials may not be great in large amounts in the lungs, I postulate.