I have two Lyman #55's on the bench. Some find them hard to adjust but I've used them so much that I can have one adjusted in no time. I just picked up another (tonight) on ebay for $28.00. It has the original box, both lge. & sm. drop tubes & yes, the elusive hopper cover. It's in like new condition. that was a good buy in that they run about $90.00 new. I use one for Unique, one for 5744 & this one will be for H4831SC. I don't use them for the final charge. I adjust them to throw a charge just under the desired weight, & then bring the charge up to snuff on the beam scale with the powder trickler. I am a stickler to have all charges weighed & on the money.
If someone else had of done to me what I did to myself . . . I'd have killed him. Humility is an asset. Heh - heh.