I cutted the visible valve cover spacers to half the height by hand, the shortened parts will be milled to the final dimension of 17mm in the next few days.
One head is disassembled because 2 badly rolled rocker studs stripped the threads in the head. The thread on the 2 studs was not formed completely and therefore the aluminum inner thread in the heads gave up immediately as i tried to apply the AFR recommended torque to them.
I ordered TimeSerts to rework the stripped threads because I don't like spiral or coil type inserts like the Helicoil items. My favorite theoretical and practical solution are "massive" inserts we fabricated in the past from stainless steel. I found inserts like the ones we normally fabricate online as "TimeSert", available as ready to use sets and wanted to give them a try. The installation process for the TimeSerts is the same as with te HeliCoils feasible with hand tools at home.
I will bring up some pics as soon as they are delivered or have a look here:
www.timesert.om for the TimeSert or the Big Sert inserts.