Digital BW, The Print

I'm not sure that what I am experiencing is the same thing but reading what 
is being said about solarization made me wonder. Here is the situation.
I started scanning a group of B&W negs in RGB, working on them, then 
flattening them and changing mode to grayscale.  Then for several reasons I 
decided to just scan in grayscale.  I have been having poor transitions of 
tone in the thin areas of the neg.  These are negs from a Holga camera so 
they are not always the best of negs.  Now as soon as I get a chance I am 
going to go back and rescan a problem grayscale scan in RGB and see if I get 
a smoother print.  
Anyone else have experience with this issue?
Billie