I like to do quite a bit myself.
Served my time as a mechanic back in the late 80's early 90's so actually fixed stuff rather than replace it.
I dont do too much with the CSL as its on warranty but over the years have rebuild countless Cosworths from simple jobs like a head gasket to full blown engine and gearbox rebuilds.
I havent put a pit in the garage for nothing
New spring going onto the CSL tonight, fix the parrot kit as its taking a hissy fit and change the front bumper at the weekend.