injector bleed off lines changed but still issues

hi everyone. I recently bought a Freelander. The bleed off lines were shot, I replaced them, however still appear to gets bit of diesel on the block and a small patch when the Freelander is moved. The idle sometimes appears sluggish and low. I was wondering if this was perhaps a faulty injector or perhaps the seating of them. Any ideas please? Thanks

Watched lines with engine running, 1st from left line became saturated within 20 seconds. Changed T connectors for injector bleed offs. Problem solved. I suspect perished O rings but didn't have correct profile. May help someone if they have the same issue as a potential fix.