Batch job print parameters missing

I have 4 BATCH jobs that output to a pdf via MAIL. The data is shrunk so small that it cannot be read. If I am in SP01, and I try to reprint with changed parameters, only a select few formats are available. (All the ABAP/4 lists).

I went to SPAD -> Full Administration -> Device Types -> Choose the device type -> Formats

I see the the output DEVICE associated with MAIL is PDF1. I checked the formats that are already listed. It seems that some of these will suit my needs - however, most of them are not available to choose when I edit the batch job.

How can I add a different format? I need to test several to find a size that will accommodate a very wide table.

All suggestions welcome.

Thanks!