Hello, I'm new to the forum but I thought I'd pass this on. I've have a 2008 XL1200 Custom and have had what I thought was lifter noise comming from the rear cylinder. It only lasted for a few seconds and was worse when it was cold out. I live in norther Wisc. I checked with the dealer and he said that they will do that and is alright as long as the lifter pumps up. Will this spring it got worse so I started hunting and finally checked the torque on the exhaust stud nuts on the cylinder head. That was it. This also smooth out the engine at startup. So if you have what sounds like a lifter at startup check the exhaust stud nuts on the heads.