Here’s a link:
http://www.yellowbot.com/palacio-carburetor-rebuilders-philadelphia-pa.html
Dan, I thought about anybody else, except you! I could do it myself but my original Carburetor is disassembled in the shelf and some parts are missing. But macht nichts, we will find some cars in Carlisle and we’ll check it there. I’m glad that it works now but I’m curious now and want to know why.
Carb cleaner - Batmobile is correct. I remember now 
I used carb cleaner on my TBI on my '88 GMC Van. This was probably about 10-12 years ago. It wasn’t running right - one garage told me I needed a part (can’t remember what but big$$) - a friend of mine told me to spray carb cleaner around base to see if gasket leaked. He was correct. New gasket cost me 1 or 2 bucks and solved problem.
yeah those tbi engines r bad about that, particularly the ones w/ a warmer plate underneath like my '90 1- ton w/ da 454. the distributors suck in them as well. suposedly the aftermarket have fixed the oe shortcomings, the reman sucks. went through 8 defective ones in a row, all the modules were bad. i ended up just putting my parts on it to correct, should have put a new module, instead of the “low mileage” one i had laying around. that left me parked about 300 miles away, in the middle of I-35 south. i was not a happy camper to say the least! i have noticed u can buy new distributors now, i’ll let u know if they’re any good as soon as i find out. won’t be on my truck though, gonna sell it soon as i paint it. gonna paint it as soon as i cement. 
--j