HI mate, i think i can help
Do you have timing light? always check timing before removal so as to have same performance afterwards.! for next time.
.
1. re fit cas aligning the half moon carefully ( as they can break off) if it does leave it in the cas.
2. grab timing light connect it to your loop wire near ignition module at top rear of engine above coils.
point in direction of timing marker. If u cannot see markers follow on to next step
3. grab a mate or girlfriend and get them to slowly open the spring face of magnetic pick up (on loop wire) while you are still watching timing marks. you will notice that the marks now align with 5deg markers increments. use your under bonnet stickers as guide for factroy ECU timing.
Aftermarket you will need to get engine warm interface with ECU read what base timing is once car is warm set to to this. you will need to rev engine and hold at 1500 or less to make sure that ecu reads same as timing marks.
3a if having trouble another way to get no1 timing is to remove valley cover and connect timing pick up to centre wire of 3 ( just more hassle on some cars)
i hope this is not to late