WR did a lot of early sleeve jobs. As you say not to the highest standard. I think a lot of the negative feelings about sleeve jobs are from those roughly done jobs. Later WR sleeve jobs could be done as well as anybody. I assume the early ones were in house because nobody would let them be associated with a name makers reputation by an outsider. Most likely they did them cheap just to keep the doors open. If it has a stamped Sleeve on the side it is an early job. Early jobs had rough seams while later ones could be done so finely you have to look hard to see any seam at all. Some are really seamless. Sleeving saves a lot of guns from the scrap pile.