If this garage dose not own a good Scan tool and a Pico scope then walk away, they are fitters and not diagnostic technicians. Working with the info provided:
Plugs are wet, suggesting pump is priming the fuel rail and the injectors are pulsing.
Spark at the plugs are present.
Compression is good.
Cam and crank timing appears to be correct.
There is one fault I have come across before with the 940 and 700 series and that is the bottom crank pulley key way can erode/shear and the pulley moves. This gives the appearance that the engine timing is correct but the valve timing will out. Remove lower pulley and inspect keyway!
This could be checked in 5 minutes with an oscilloscope and pressure transducer.
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