I had sent these heads off to self racing to fix that problem.
I tried to use a spring cutter on my own to make the clearance and found I went a bit too wide as I was going to use a spring cup, the cutter got a bit too much into the intake port and had to be fixed. I only did one head.
So I sent it to them to fix the problem on both heads. Well they did weld up the other head and re ground it, but did nothing to the other one, just reinstalled the springs. I also had them do thier Port Intruder modification, and a 5 angle valve job and flow bench test.
Not sure what I can do about this, they had my heads for months and I do not want to send it back to them.