Dipstick pop out
 

Hey guys, I'm having the dipstick pop-out issue.
Have an 06 Redline with 60#, 2.8' pulley, tuned at 15 psi with meth injection.
When I first had the dipstick issue, I had the IM gasket replaced with the Phenolic spacer. Used the two paper gaskets that it comes with. It fixed my pop out issue for like three days, then the dipstick popped out again. PCV line from valve cover to intake is clear. I am going to do a Cylinder leakdown Test, but I was just wondering if there is anything it could be besides rings. Really don't want to tear the motor apart.