308 Failure to start

[F308O]

I recently had the car serviced, the workshop had the flywheel skimmed and a new clutch plate fitted. The car stood in the workshop for 3 weeks, so the battery ran down. On reassembly the car would not start all electrical circuits test correct. Question Did the skimming of the flywheel damage the magnetic pick ups or did the flat battery maybe damage the digiplex control box?
Any comments will be appreciated.
Thank you

[STEVE BOSWELL]

did they place the flywheel in the correct position when they reinstalled it if they just put it on without aligning it to the proper sensor location it will spark but not at the right time