Throttleblade Sealer DAG

This is the VERY hard to find sealer that GM used "back in the day." I am told there was a Service Bulletin that addressed complaints about rough idle on the tripower cars. The bulletin described how to apply the sealer and directed the mechanic to the parts counter for a small vile of sealer, a small paint brush, and directions. DAG213 does an excellent job,. but will not help badly pitted throttleblades, or badly pitted bores. I use this product on all the end carb throttlebodies I restore. I have seen some criticize this product. Hmmm. Can't understand that. You want a good idle, you need to have the end carb throttleblades sealed the best you can. I still find it on some of the end carbs I restore. I have heard some criticize this product, saying that comes off with carb cleaner. Might be so. But, why would you spray carb cleaner down an end carb, anyway? So, if you use the sealer, don't use carb cleaner. It is hard to find for several reasons...1) Suppiers sell it in large quantit