With a JH and a ES would work so well together a big spark will always fire up as you touch the button no matter what, even without the retard lever once set right they don't kick back, in over 12 years mine only kicked back when I was first tuning it after the install and hasn't kicked back since on full advance, I don't understand why everyone makes a big deal with kick back once tuned right they don't kick back, it's like any ignition system once tuned right no kick back at all, set at 28 degree static timing and if it does have any KB just retard the adjustment ever so slightly till no KB same as with any ignition systems.
Once set they stay set only readjust when new point's being fitted but after over 12 years and over 35k miles I haven't touched the point's in my JH, still starts on first kick and is running great I leave it alone, just pull the front cover off when doing a oil change to inspect the point's and a few drops of STP on the flet pad for the point's cam.
I have 2 tune up kits in my part cabinet when needed and probably out last me before I use both sets.
Ashley