I did suggest things if you re read my posts - I appreciate your courage in coming on here and showing your work and training in;t easy.
If the market is declining, then you applied the appropriate downward adjustments. I still fail to see why you include sale 3, which sold for a higher price, having only 1.69 acres, then comps 1 and 2, which had 7 plus acres and 2.7 acres - there has to be a reason why comp 1 with the most acreage sold for the lowest price--- was it a desperate seller? Worse quality? Worse location ? -
Why is comp 1 on the smallest lot selling higher? Better lighting quality? Obviously, there are reasons for it, and putting them in and adjusting for them makes sense and brings teh adjusted range of the comps more into order that reflects the contribution of elements.
p s
Of course, we're working over the internet, and we don't know your area, so the suggestions are not as on point as if we were there, but basic principles apply.
Yes, barns and workshops can vary in size and quality, without your comments, we have no idea why one is adjusted at 50k and the other at 10k. Contributory value of extra acreage can sometimes be quite low and that might be the case in your area since applying larger lot size adjustments seems to trhgow things off.
I get the carpet adjustment I was referring t a two car garage adjustment of 16k - very specific and seems since you asked a larger garage adjustment is indicated - 20k or been more. You can clone the grid or copy it and try different adjustments as suggested see if they even out the adjusted values more.