I bought the red ATG gun and had nothing but trouble with it. When I got tired of the frustration I bought the yellow one with an adapter so I could use 1/4" tape with it also. Then there was a mix up with the tape I ordered. I got one box of gold 1/2"(acid free) and a box of regular 1/4" (not acid free). So I put the regular tape in the red ATG (for cardmaking) and now it works good. Long story short I have two ATG guns.