I was able to resolve the issue of the "N/A" check in boxes 36a1 and 36a2. When I right-click on the "n/a", I can select "Override" and then I am able to select "Yes" for 36a1 (was property acquired after 9/27/17?) and "No" for 36a2 (elect 50% in place of 100% special depreciation allowance?). After doing this, box 36i Special Deprecation Allowance is now valid and everything checks out!
