I am trying to install some new rockers on my rebuilt head and when I bolt the cam towers down to spec the intake valve rockers are so tight that they are slightly cracking the intake valves when they are on the base circles. The exhaust valves have enough clearance to wiggle them slightly on the base circle. I was reading the FSM and it states that I can use thinner shims with the hydraulic adjusters. These are $22 a piece here on peachparts. They should only give me another .3 mm of clearance. Am I missing something here?

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'88 300ce black/gray
'88 300e 3.0 5 Speed! gray/gray