Thanks - appreciate the good advice.
I'm a DIY'er so likely attacking this on my own.
Looks like I might need a new tool then, a leak-down tester
Both leak-down and compression is done with a warm engine right? do I remove the wire on top of the ignition coil when I run the compression test? That should keep it from building up energy right?
I have started getting my head around having to remove the engine, but testing it first is the right thing to do.