I have owned a Lee 4-20 pot for the last 10 years and cast a lot of boolits from it. The dripping started about three years ago and was sporadic for awhile until it was continuous the last year. I have read a lot of posts here on tackling the problem, but never wanted to take the thing apart, fearing I would do something to make it worse. Got some Amazon gift cards for Christmas and used them, in part, to buy an RCBS Pro Melt. Took the 4-20 apart, cleaned the rod and inner part of the spout, scraped all the gunk out of the inside of the pot, and melted some pure Lead. Cast a couple dozen Lee Minie balls and kept waiting for the drip. Nothing...not one molecule of Lead dripped out. Always wanted one pot for pure and one for alloy, and no dripping. Hallelujah!!