This was not nearly as easy as I was expecting, I found it extremely challenging to get the alignment perfect – I used a combination of plumb bobs and laser lines – got there in the end, although it did take me quite some time! One slightly useful thing I found was when using the plumb bob technique to plumb up from the chassis points, it is not easy to be extremely accurate at the first attempt so just get as near as you can to plumb then drill a very small hole – from there I used a split pin to hold the plumb bob string into this hole and then made small adjustments until I was sure the small hole was directly above the chassis fixing point.
Marks Cobra Build 