Got the 318 back up and going in the daily after 4 months, new oil/filter and all that good stuff, the top end was never touched during that whole process. Lifters started tapping as soon as it started, I thought this was normal given all the cranking during testing and the fact that no oil had been to them in such a long time, been driving as usual for 4 days seeing if they'd quite down and so far they may have gotten slighty better but haven't stopped for sure... is this normal or should I pull the covers and check the rockers?