The whole number 1 adjustment threshold didn't work either, although methinks that the typical adjutment threshold would almost always be in in increments of an acre, at least for lot sizes up to, say, 5 or even 10 acres. I'll holler at ACI technical and update the AF accordingly. (Wondering whether the subject and all comparables' lot sizes need to be changes to sqft, although if so there would be no per-acre alternative embedded in the form. [As an aside, our industry being an art as well as a science the appraiser could simply fail to make adjustments and base his or her approach on "an absence of demonstrated lot size adjustments," [LOL], kinda like a recent assignment for an acre I just completed as a follow-up to the original appraisal that adjusted the comparables' 10 acre lots relative to the subject's 1 acre lot at like $18,000, or about $2,000 an acre in a primo view amenity upscale neighborhood, surprisingly to hit the contract price exactly. Geeessssss tough to compete with that type of competition. More to follow. Thanks for the advice. Regards.