Joyce check out this link on fixing crank out windows. If you can take a photo and post it so we can get a better idea of what your issue is perhaps we can provide you with a better response to your question. Not sure exactly what you mean by the operator back into the channel?
Agree, photos would be helpful. One quick point to mention is that with casement windows there are not a lot of parts you can easily disassemble. The handle will come off if the small set screw at the base comes loose. There is usually a cover that slips on first, then the handle will slip on next. Perhaps the set screw is part of your issue?
I am going to have to submit a photo too. the crank doesn't work, and it's a 2nd story bathroom window. I have yanked it shut with a coat hanger and it's still stuck in the window!! LOL. Trashy, but keeps it closed.\