Your right there Normski, he should have a go at the simple things. Just wear gloves so not to mark the bulbs,that will really get you boiling,
Offside one is easier if you take air box out, dont suppose he will fancy that one. But dont be afraid assess what you are doing and dont rush.
Taking photos with your phone is a good idea, if your not 100% .
John is right you have a strange set up if what you are saying is right.