Yes, the balance is the tricky part.
Most ASL scenarios are balanced for head to head, so for 1 player the AI is at an immediate disadvantage.
The 2 conversions I've done so far, the AI has numerical superiority, and even with that, I gave it a few extra units.
Then you've got to play around a bit with the pts. for victory hexes and casualties.
Some things I do with units. Russians only have the Maxim mg, so I use it for all mgs in their OOB. For German I use HMG for heavies and meds and LMGs for LMGs. I don't model crew counters as they are inherent with weapons.
For mortar OBA, i use a strength of 3, and then go on up from there.
With this system, I like how unit quality and different damage counters really affect a units' ability to fire and move.
I think with a lot of the scenarios, they will only be able to be used as a starting point for a good firefight for 1 player. Of course with head to head they should port over with a little tweaking of the victory conditions.
Btw. what graphics prog do you use to post these screens?
Keep up the good work.