Digital BW, The Print

Thanks for the advice Paul; I might follow your lead (again) in my next setup. 

I know all about those rollers. I have fought with them for years on my A4 printer (you're probably sick of hearing about it). I'm happy avoid that big rubber roller by not printing on the far left at all. I should be able to print a clean A3 with a small border on an A3+ sheet. I've already sacrificed the bottom of the page by removing most of the ejection rollers. But if I could clean, remove or otherwise disable it I'd be even happeir.