tensioner should be at 65nm. I found the system to be pretty foolproof, but as BC said, check it anyway to be sure.

As for 'bad' lifter, trying driving the car around a bit, it may smooth out. Mine sure did after I put it back together and drove the hell out of it. Sounded like crap, smoked, nailed at idle..but after driving was 200% better.

You'll find other threads on here about quieting the 603 lifters...seems to be a recurring theme, so I doubt a source of immediate major major concern.

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1982 300TD 210K miles ("The Replacement" aka "The Anvil") - SOLD
1979 300SD 245K miles (never ending project)
2007 Pinarello F3:13
1995 Ducati 916 (SOLD, sniff)
1999 Ducati 900SSie (SOLD)