simpler align.{Backward,Forward}IfNotAligned: no need to branch
simpler align.{Backward,Forward}IfNotAligned: no need to branch

replay/metrictank,replay/metrictank,raintank/raintank-metric,raintank/raintank-metric,raintank/raintank-metric,replay/metrictank,raintank/metrictank,raintank/metrictank,replay/metrictank,raintank/metrictank,raintank/metrictank