^thanks guys.
First thing tomorrow, I'm going to check all the ports - including the back.
Searching the forums I found a couple ways to test and find vacuum leaks.
If I can put a rag over the top of the carb, and the engine keeps running, then it's surely a vacuum leak.
But even so, I'm still going to do the suggestion posted in the forums on how to find the leak. That is to spray carb cleaner at one location at a time, if the engine races, then that's where the leak is.
I actually knew about spraying carb cleaner to find leaks, I had just forgot about it. I'm getting old.