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I had to switch blocks, old block had lifter bores bushed with no oil holes I added oil restrictors to the heads . New block the lifter bores are not bushed same heads. Pushrods are starting to get some color has to be a oil issue. First thing I'm thinking is remove the restrictors in the heads. What do you guys think.

Rockers are oiled through the shaft

Thanks
AL

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Is the radius on the PR ends proper to match up in
the rocker... you could be riding on the edges...
open up the restrictors