I found ours in the area where they sell screens for windows and weather stripping for doors and windows - there are alot of different ones the brand I got is the Accurite - it was not that much money. also I am using a water wiggler ( you know those cheap toys filled with water that kids can sgiush - mostly found at the dollar store ) I can take a picture of mine if it will help you.
how is little solo doing?
Julie