SmartForms w/ Printronix SL4M RFID printer in Zebra emulation mode

Trying to get a basic Smartform to print using a new printer. It is a Printronix SL4M RFID printer that emulates several printer modes, including Zebra.

The printer was changed to Zebra mode, device type in SAP is LZEB2. Configuration printout on the printer shows it in Zebra mode and using a 203 dpi printer head. Configuration is all defaults (command prefix, label prefix, etc).

Output generates in SAP. Spool is ok. Print preview is ok. Completes with no errors in SAP. Physical printer is giving intermittent results. Usually, no output at all. One time, we got half a label that actually contained valid data. Sometimes we get "invalid data" messages on the printer. Last test spit out two blank labels.

Unfortunately the printer is in Germany and I am in the US. Going to try to change the printer to "ZGL QUIET". This is supposed to print out the ZPL code as text. Want to see if any control characters are getting changed. Also checking settings that are code page/language specific.

Looking for any suggestions. Thanks.

Norm