Wow. I really don't think all the yelling is necessary.
However, I can understand your frustration. Perhaps you had a different idea of what the log type vapes are about. They are sort of a personal vape. Your stem holds enough for a couple of hits before you change it. Sometimes, depending on the herb or if you use kief, you get more out of a stem. This isn't the type of vape that will consistently give you huge, lung bursting hits (although I've certainly had a couple). It's like the difference between well whiskey and aged whiskey. One you slam down, the other you sip.
I don't know how you are loading your stems; I find using the straw method tends to "clog" the stem more than loosely packing with my finger, or poking the stem down gently into some herb in my grinder. I dry hit it once before putting it in the Zap to check the draw and seat the herb.
As far as the fit of the stem, it shouldn't be really tight. You don't want there to be resistance. Yes, the metal heats the metal of the tip, but the herb is warmed more by the air you suck through it. If you hold the Zap like a pop can, with your pointer finger sort of bracing the stem, you can use it one handed with no problem. The only time the stem flies out is if you don't have your finger bracing it. Then it can stick to your lip and come out, which is a bummer. You don't really need to be doing all that spinning and tilting. And as lwein posted, slow and steady.
Give it a chance. Then, if it isn't the vape for you, at least you gave it a shot. I'm sure you will have no problem selling it. There's a thread here on the forum for just that purpose. There are all kinds of vapes out there that suit all kinds of needs. I have three now, all for different purposes. But I didn't buy any of them before I researched them at great length. An informed consumer is a happy consumer. So make sure you read up on several different kinds and ask lots of questions. Good luck.
