I got my new pellet Gage today. I sorted 2 tins of Mark II 25 grain 33.95 pellets. It takes me about 40 minutes to sort a tinof 300 pellets. I had no 6.35 and no 6.38. I had 20 636 in one tin and 30, 636 in another tin. The rest were 637. I think this is pretty consistent pellet sizing. I'm going to check a couple more tins and if they go the same way I won't worry about this shipment. I have a new shipment coming in later this month that I'll try again on. I guess I can't blame my misses on the mark 2s! 
