1.7 Puma Crank Trigger Issue

[sleepyhimiko]

Hey everyone, 

I'm in the last stages of my MK4 fiesta Puma conversion and have run into an issue with my flywheel. I have a ttv lightened flywheel on the engine at the moment and the car cranks, fires and then cuts out at the moment. My mechanic thinks its a crank trigger issue and has said there's a 5mm difference on trigger cut out?? Apparently this is why it shows a trigger and starts and then loses it. Does anyone have any advice on this or have any idea on how to fix? 

Thanks