Tweaking file for beginner: bloodsuckers Thread - MISERY mod for S.T.A.L.K.E.R.: Call of Pripyat

I have N++ but so far only tinkered with ALife setting.
I'd like to modify the bloodsuckers stealth programming, making them more visible (having to wait for them to reappear is time consuming and boring).

Here's the setting figures. If I wanted to shut off their full invisibility (no_visability?) would I put zero or some large number? Also, do I need to copy these figures to any other files to prevent crashing?

Particle_Invisible = anomaly2\bloodsucker_shield
Particles_Invisible_Tracks = monsters\bloodsucker_step
Particles_Invisible_Tracks_Freq = 70;100

Invisibility_BlinkTime = 300
Invisibility_BlinkMicroInterval = 30
Invisibility_EnergySpeed = 0.05

full_visibility_radius = 5 ;5
partial_visibility_radius = 9 ;10
no_visibility_radius = 14 ;15

visibility_state_change_min_delay = 1000 ; ms

I would probably play with the various Radii. Something like full 50, partial 100, no - 150 ???

They are not exactly hard to kill, invisibility is their only advantage in life - why rob them of it?