You are not supposed to run any 4 wheel drive modes on dry pavement due to the lack of slippage. If you do, it will cause wear in the 4 wheel drive components (axles, differentials and transfer case, etc.). Use at your own risk. 4A is for slippery conditions.
Most EXO Shield installers should have a policy for repair/replacement of a windshield that gets cracked post install. I paid $225 for my policy (less than my deductible) and it covers up to $1500 to replace the glass. I took two rock chips in March and they removed the film, repaired the...