A much simpler approach is to use D-23 with a water bath. Some workers even dilute the D-23 1:1 and use a water bath.

2 minutes in developer - 1 minute water bath and repeat until desired highlight density is reached. A little practice in recognizing when the highlights are appropriate is needed.

I use LC-1 often. Look for this on the Unblinking Eye site.
Jim Galli alters Rodinal and gets beautiful results. His information is in another thread.