how to print large envelops on 5si

[ssphoenix]

I am having a hard time printing large envelops on this printer. I used custom page with 13 hight 10 to print my envelops. Upon setting up the page some message comes up saing that my printable area is too big to fit. Do I want to fix it or ignore it. If i ignore it, the margin will be correct but the information on the envelop will be cut. If I chose to fix it, the left margin will revert back to 2.2".

I used also 11X17 option but does not work very well. I have to dinker with the text formating.

Help would be greatly appreciated.

Thanks.