Hey guys, so about two weeks ago we decided to brew up our first lager. We hit our OG of 1.071 and used Wyeast 2000. We were looking to get a final gravity of 1.018 according to BeerTools Pro. I made a 2L starter and pitched 1L into each of 2 6 gallon carboys. I probably underpitched, so it took about 2 days to get started. Its been killing it lately though, and just yesterday when the gravity was 1.022 I started bumping the temperature up for a diacetyl rest. Thing is, its bubbling away like crazy still and the gravity is now at 1.016 as of today. Any ideas? Should I let this thing just keep going, or should I start cooling it to slow it down? Is it infected possibly?