I have a Epson ET-2720 . Just bought a box of #10 business envelopes with printed return address. This printer puts ugly black smears on the envelopes. It has done this several times before but now it is worse and on every envelope. I have tried smoothing the envelope flat and only print one at a time. This is the worst printer I have ever had. Just one of several issues with it. Only about 6 months old. Can't find any info or support to solve this issue. Anyone with ideas?