I have noticed recently after a hard drive my dipstick pops out. I only noticed by chance as it doesn't affect the idle. the breather is a spec r vented to atmosphere and the car runs about 14 psi. the dipstick does pull out the tube with minimal effort by hand. am I been overly optimistic when I think its just a worn/loose dipstick or could it be a sealing ring that's failed? the motor only has a couple of thousand miles on it sine been built