I'll check out your insights....I think I should look back on the rebuild of that carb...

few things I noticed:

1) I over adjusted the float (the level is a bit lower) than the middle (some sort of a 'dot') in the view glass.

2) I didn't change the carb top gasket...there could be a leak that's why it is not idling low.

3) the ball bearing you mentioned is in place but there is another "hole" but my stock does not have a ball bearing but rather a stainless hexagon metal with one end flat and the other pointed (the pointed end meets the bottom hole)....I tried substituting this with the ball bearing provided in the carb kit (but since it was for an A10...I'm not sure if caused my problem)...but the lowest idling was about 2000 rpm....when I put back the original hex-sided stainless metal, the lowest idling dropped to 1000 rpm....we figured that the weight of the ball bearing was not enough to stop the gas...so the idling was higher...but I didn't assume that the gaskets could also be the culprit...


Anyways, its a holiday here for us tomorrow so I'll try to check out your suggestions....

Update you soon.

BTW, I've noticed that the spark plugs from 1 and 4 is oily and black...and the 2 and 3 have good "white" burns....could it be that 1 and 4 have bad valves or have busted piston rings? Geezz I gotta have me a compression meter.....