Slight WA-1 Carburetor issue

I have a Twin-H, WA-1carburetor set up on my Super Wasp. The car runs fine starting, idling, accelerating and at cruising speeds. The only minor issue I have is that when coming to a stop with my foot off the gas pedal the engine runs just a tad fast. This slightly fast idle is immediately brought down to a smooth slow idle with just a slight tap on the gas pedal. When I accelerate again, it goes back to the faster idle speed each time.
I checked out the linkage for any binding and even sprayed some carb cleaner on the carburetor linkages, but this hasn't improved things. Before I start messing around with adjustments on the carburetors themselves, any idea where I may want to look? Thanks for any advice here!
Dan
I checked out the linkage for any binding and even sprayed some carb cleaner on the carburetor linkages, but this hasn't improved things. Before I start messing around with adjustments on the carburetors themselves, any idea where I may want to look? Thanks for any advice here!
Dan
Comments
I'm curious if anyone has experimented with alternative, new build carbs on their Twin H setups.
What a difference. No higher than usual idle when coming to a stop. In fact, the idle may now be a tad on the low side, though the amp light doesn't come on when idling even before the engine warmed up fully. Thanks again to Glowplug, superwasp and 50C8DAN for your suggestions.