Non start after clutch swap (not by me) Injectors firing but not coil pack. (So plugs wet)

Fault codes;

P0341 Cyl ref sensor coherence (Camshaft sensor?)

P0351 No spark, coil 1

P0352 No Spark, coil 2

P0338 (No description but acccording to Autodata crankshaft sensor.

I have scoped both crank and cam sensor and am getting good signals from both. owner replaced crank sensor as an experiment I have not yet scoped both together (Battery was running down)

When I return to job I will do this. If it was possible I would have whipped the cam cover off and checked the cam timing but the design of this makes doing so a major excercise!

I dont suppose anybody has had a similar issue with one of these and any helpfull sugestions as to where to go from here.

Thus far the faults seem to be pointing towards the cam belt slipping a tooth but I cannot see how this might have happened based on the back ground.

Ho Humm...