The prime is the tightest juice flow I have of all the kayfuns. They spec'd it pretty close. i wouldnt be surprised if the orings give out sooner on the prime.
Not sure if alot do this, but everytime I rewick, I really lube up everything with juice. Not only the 2 orings, but everything . I start with the little outside deck area above the top oring, then the top oring, then everything below top oring, especially the threads. I use to juice all this up, then screw it together , then unscrew again, relube and button all back together. Now it is ultra smooth and easy like a fine tuned machined. I do this on my km3's also and after doing this for a couple months, it really makes the jc smooth as butter
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