+1 on the sleeves around the studs that have the acron-nuts on the 410 head. Also use new or annealed copper washers.
I use the F2 head on a K4 motor with 62mm high-compression pistons (762cc). I was warned that it may not flow very well, but my dyno-chart says it will pull past 11,000 rpms and has 78 RWHP...........maybe more when we get an improved exhaust system.