A friend of mine installed one of the fuel fillers from The World Models on my Seagull PC-9 with an inverted Thunder Tiger Pro .46 this afternoon, and the difference was night and day. The engine didn't flood when I fueled it, and it started without a problem. We did change my fuel set up from a 3-line to a 2-line tank, Here is a link to the fuel fillers
http://ecsvr.com/twm/ShopDisplayproducts.asp?Search=Yes.