What would be the best way to find out if the angle mill on a set of heads is too much? I had to slot the intake quite a bit but it did finally sit. I changed heads because i broke a spring and these heads were available. Now the brodix heads are old style but i figured they would be better than the steel darts that I took off. The motor feels the same but I expected it to wake up alot more than it did. Could these heads be hurting my motor instead of helping? Is there anyone that can help me?