Before reoplacing the injector, replace your cross over lines...
I thought I had a leaking injector and in fact it was the cross over that leaked just enough fuel that it settled at the bottom of the injector and made me think that it was the injector.
Replaced the hoses and voila, no more leak.

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'99 S420 - Mommies
'72 280SE 4.5 - looking to breathe life into it
'84 300SD Grey - Sold
'85 300SD Silver - Sold
'78 Ski Nautique