Excellent work. I worked on a Janssen 20 ga I paid $100 for on the EE. It was completely worn out but the seller told no lies. It was my first rebuild and you have to start somewhere. The sears were toast and the metal very low grade. She was also off face, pretty much shot out. Cleaned up pretty good, stalled at doing a complete rebuild of the sears. Yours is a higher grade than mine for sure. Another stretch of -30c and she should be good to go.