To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Being fair here. I attended an ICOR (hotshot) refrigerant class this evening and they had a little bit on "do not charge to a full sight glass" ,so I asked my usual Q's and I said my piece and tomorrow I get to talk to a top tech at the factory. I'll let you know what they have to say.