Look over the available spare parts and buy what you can't make NOW. Time flies, and before you know it, they will have changed the design again and you get the snotty LEE CS attitude and NO PARTS. I"ve not often had to us their CS, but I've never been inspired by thr treatment either. This last incident was the worst, which still only puts it a level or three above what you get when dealing with so many non-gun-related entities.
There goes the warranty as well. They will offer to "upgrade" you to the new design if yours "breaks," by making you send your faulty pot TO them and then pay shipping on the replacement FROM them, but you stll have to pay "wholesale" for the new pot, which is about what people charge for them anyway. So, you pay shipping both ways to get a pot for what others already sell them at.... Now, there's a "LEE Economy" lesson. You have to pick and choose, as you can get some real value using LEE and you can also get blatant "anti-value" from LEE. You just have to decided what to pay for and what not to pay for.
Almost begs a new thread for ideas and suggestions on which LEE pot parts to buy ahead based on experiences of members here. I can't really think of a one for the two old pots I've had for thirty years though. Everything about them is still just fine, except the over-sized orifices, which I will find a way to fix when it's warmer and I'm caught up on casting for the year. No way did I see no backwards compatibility on lead pot parts, but the cost of these post have been amortized over a long, long time and lots and lots of bullets.