help! carb/mixture/ignition trouble, not a mechanic Options

[lotus_65]

i had new webers 40's professionally installed about 5k miles ago. always seemed to run too rich for me, but the guy said it was right, so there. (he must be out of town, cause he ain't callin' me back)
about 2k miles ago i started getting some exhaust ignition of unspent fuel, and it's gotten progressivly worse. i finally pulled the plugs this morning and this is what i found:
#1 black and sooty like the tailpipe
#2 black and sooty too, threads are wet
#3 brown and sooty, not as bad
#4 gray, normalish

the carbs on the 1/2 side look wetter & are collecting more debris than the 3/4, and the gaskets even look wet ( (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) )

besides taking it to him for a big $, is there something i can start with to flesh out the issue? (i will have him do the major stuff)

thanks a bunch

[maf914]

QUOTE (lotus_65 @ Aug 30 2005, 03:47 PM)

my question it: can i just achieve a level of performance working only the mixture, or will i have to swap jets all the time?

Once you get a good set up for the carbs you can leave it alone.

As Andy said, post your engine specs and any mods to it and all of the carb data (venturi size, emullsion tube, main, idle, air correction and pump jet size) and chances are someone here will have a similar combo to help get you started. I used Weber 40 IDF's on a mildly modified 2.0 for years and was satisfied with the performance.