Sorry to bomb the broader list (versus just the Ford Race Cars), but I need some information...

Was checking the valve lash on my LPHP (previously IT) Fiesta over the weekend. The valve spring pressure is ridiculously low! No leaks (97-98% on all cylinders doing a leak down) but I can open the valves with my thumb! I'm new to the Fiesta (and to Limited Prep) but this does not seem kosher?

I suspect I'm looking at valve float at fairly low revs -- though in my first race in the car a couple of months ago at Road Atlanta I did not notice it.

Help?

Rick