Hi Alex:
It is a recuring topic on this list, that many ZX-11s have oil starvation problems to #3 and Wheelies will blow your engine.
Mr. Turbo at
http://www.mrturbo.com/ builds turbochargers for the ZX-11.
In order to keep the engines from detonating they have a $300.00 pan modifcation service. They weld on a tower in side the pan and have hose modifications that pump oil directly to number three. Go to their site and read about it.
For convenience, you can find stock ZX-11 pans on E-bay for around $30.00. Buy an E-Bay pan, send it to Mr. Turbo and while the pan is being done you can still ride the bike.