The treads are not a "perfect" fit for the stairwell. On either side of the tread there may be up to a 1/8" gap between the tread and the wall. My question is, is this normal? Should I consider adding some trim strips on the tread and riser or something? Or will it look fine when it's stained and painted? The only weird part with the trim would be that from the front of the tread there will still be a small gap between the tread and the wall. I have no references to see what normal wooden stairs should look like and cannot find any online. I do not know if the gap is acceptable. Can someone help me out?
Also, what's the best method of removing sawdust after sanding before I stain the treads? Should I use water and give 24 hours to dry?