Hi,
I have three basting guns. They are gret. Two of the guns use larger "pin" than the other one. You do have to make sure that your sandwich is together right. Have you tried safety pins to baste with? They are also a good way to hold the layers together.
The two guns that I have have different sized "pins". The red ones are the largest and they let things slide a little bit. The gun with black or white "pins" doesn't let things slide as much and it costs just a little bit more. I believe the price is $25 - $30. I have had a lot of trouble with the one with red pins. They get stuck in the gun and you have to take things apart to get them out. It can be a real pain. So far, knock on wood, the one with the small black or white pins has not stuck on me.
I hope this has been of some help to you. my email is "
[email protected] " if you want to talk about it some more or ask questions.
Henri