B2200 Stalling when Braking

LONG time luker, first time poster.

I have my 1990 b2200 Cab Plus. Carb'ed (stock Nikki)

Runs really good off idle, but when braking and coming to a stop, it will chug, idle down, and stall. In a couple of seconds ( if it did not totally die out) it will idle back up. At my wits end. Cleaned the EGR valve

I have a ready to go weber/ pacesetter combo from an old B I have, but this B's stock engine sompartment is so clean id hate to tear it apart yet

Any solid help would be appreciated

I think I have it fixed for the most part. Did a plug check, and all were bone white! LEAN, def.

The PCV hose was cracked (not all the way, but close) and the bad end near the intake fell apart in my hands. Just removed the whole entire hose and put a rubber cap onto it until i can find some appropriate size hose to replace it with. It will just be a neutral crankcase ventilation system for now. Haha.
Found another bad line near what I think is the vacume control solenoid for the EGR, - the nipple had been broken off. Made a plug for the existing hoses on it until I can get a good used one. I threw the one from my old truck away! DUHHH.
Found another hose that had worked it self loose from age, cut off the bad end and slipped it on further.

After all this was said and done, took it for a test run. The ECU is able to maintain a 800 rpm idle smoothly, and best of all, when stopping, the idle will only dip about 100-200 rpm and come right back up! NO MORE STALLING!