Went ahead and installed some stacked ledger panels from Floor and Decor. unfortunately, not all the panels were perfectly made. Therefore, during the installation in order to keep the panels level, spacers were used. Thus creating a small linear horizontal Gap between some panels. This problem would not be as noticeable had the mortar not been white. is there anything I could possibly do to make this issue less of an eyesore. Ripping it all down is not an option.