My P_11 #1 light is well behaved. Yet, with what seem the same settings, #2~~4 are often too-bright or too-dim depending on spot/infinite/area/point etc. I've reached the 'shrug' stage.

But, yes, even with Superfly, I can dial down spots to a narrow beam with 'cast no shadows' to illuminate eg face under big helmet...

Takes much 'trial & error', much swearing, a lot of test-renders, always wondering if my dozen-plus deleted test-renders will all re-appear next time I open Poser...

You may find you must combine two lights from same direction.