OP, did your gas in the intake issue persist with the carb change? Or, which carb was it that gave you that result?
The change in performance will come from the engine entering its primary torque curve before the converter locks up. The car will feel (and will be) quicker. Everything will work smoother. You shouldn't notice a drop in rpm when engaging gear.
I run a 10" converter in the race car and the idle doesn't change at all when I put it in gear. Bigger engine and a lot more compression, but the same parameters apply to a lesser degree to your combo.
Is the car still together? If so, try something....warm it up, then shut is off and carefully pinch off and disconnect the flexible fuel hose and plug it and cap the fuel inlet on the carb (to prevent vapors being released). Block open throttle plates. Let sit overnight. Look inside in the morning and observe whether there is fuel or not in the intake.
When you've observed fuel in the intake, how did you accomplish this? If you open the throttle blades to look, you're going to get a squirt of fuel from the accelerator pump, so it will be wet in there. Did you remove the carb?
it will be a couple days before its back together since I am waiting on the new converter, but yeah I noticed it both time after taking the carb off...but I am sure I moved the throttle lever when disconnecting the linkages...so I will try it your way to be sure when I get a chance.
OP, (that's cool Pat) another way to check the carb would be to just fill it, a couple turns of the key with an electric pump, and just pull it off and set it on a coffee can or something. If it's leaking it will be obvious. Rough guess though, it happened on both carbs, you are likely seeing the pump shot from when you opened the throttle like Pat said. If you have an electric FP then you might also want to look at the fuel pressure when you get a chance. Too high of fuel pressure at the carb, either carb, could be bleeding off through the inlet needle after you shut it down.
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**Never drive faster then your guardian angel can fly**
LOL, I thought he had a mechanical pump. I'm in Narita now and major jet lagged, so I won't be offering any meaningful advice until I get to Singapore.
Perhaps he can get the converter done and then we'll re-visit the details.
OK, get back to us once you have the new converter in, test the combo and then do the carb test as IMO these could be separate issues, perhaps slightly overlapping. Good very early morning (2:13am) from Singapore.
will do, it would make it a lot easy to focus on one and troubleshoot if I can get the converter cleaned up. I have been to singapore, only needed to go once, dont care to go back! Too crowded.
Watching the SQ flight attendants checking in today, I have to say I might suffer the crowds. IMO, so far, it's not nearly as crowded as Japan was. Interesting mix of west and east.
Hope the converter install goes well; remember, turn slowly and push, making sure it seats completely. If there's space between the bellhousing and engine block, don't force the trans. Since you probably put in the AOD, I'm preaching to the choir
install went smooth, havent driven yet since I have to reset the TV cable, but just putting it in gear results in a 100rpm drop and a nice idle, even at 750rpm. I may bump that up to keep the idle at 850rpm in gear which is a bit smoother, but so far i am very impressed.
OK, get it out and drive it and I'll bet it will settle further. Then, if experiencing fuel smells and/or hard starts, we can move on to the carburetor. Glad to hear things are going well
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IMO, so far, it's not nearly as crowded as Japan was. Interesting mix of west and east. 
