Recently, I have gotten 2 RSSTs and an AGA T+. These each came from 3 separate vendors and on each one they had one or more screws completely stuck. I pried on them for days and then tried liquid wrench on all of them. Any advice? I've sent two of them back to the vendor and in the process of sending the third back. I would love to not have to worry about bothering sending one back. I just can't believe this is something only I have been experiencing.