I need a bit of tutoring on the right way to use an oil lamp. We have several, inherited, which we have refurbished with new chimneys and bases. I bought some oil, and last winter when we had a power outage, I tried to use one. However, though it had new wicks and plenty of oil, I kept having to raise the wick more and more so it would not just go out. Can someone tell me what I am doing wrong?