wmgill wrote:Thanks for the input. Since my post I called Perko who won't sell retail, but has plenty in stock. Their part number is 0324001ELM for the 1 3/4" jobs and 0324002ELM for the bigger ones. With that p/n I had no trouble finding them and ordered a couple more. I didn't really want to replace them with the "modern" stuff, and now won't. I just rebuilt my carburetors a couple years ago, and don't think the problem is with the screens, but when I replaced a fuel pump I ended up buying a tubing bender to redo the plumbing because it twisted itself into a mess while removing the fitting.
You didn't reference my mention of the little filters, the CG-11's - I think you should replace those first. I don't think they're a Perko item. More like Fram or other conventional filter maker.