Good luck Wally. Lot of pieces parts in those carbs. O rings galore! Sure you have heard this but Randakks kits are complete minus brass. Even includes those ever elusive super small cotter pins. did not need any brass part but all the O rings were pretty pitiful looking.
Getting ready to use an Idea from another post. Rebuild your carbs. Then take a syringe like you get from a vet. Place it at the end of the fuel line going to your carb. Use water and force it into the carb like the pump would do. Look for leaks that way. No messy gas or alcohol to deal with. If...
You need to make sure you adjusted the carb floats properly. Tip them sideways just a bit till the float valve just touches the float seat. Can't be any pressure on that float valve or you will get the incorrect height hence the leaking fuel problem .