Naprec Valve Guide

[Kaisen]

Any guys here using Naprec valve guides? I installed a set on my SR20VE head and it seems that the outer diameter of the valve guide is smaller than the stock ones at where the valve seals should sit, meaning the valve seals would not form a tight seal. What should I do? Measure the outer diameter and find a suitable valve seal?

[kyral]

how did you install them if they are a smaller diameter? these are interference fit parts I thought? id toss them and get a new set of steal or brass ones. valve guides are less than a dollar a piece usually (brass are about 4-5 ea)