didntdoit-It sounds like your rods haven't bent appreciably yet. You may be one of the lucky ones who drives many miles in a rod bender that never bends a rod. Your rough idle could be dirty or worn injectors. Try a diesel purge or run a tank or two of B20 and see if that helps.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.