Cannon intake and msa headers flange differences

[hatepotholez]

 

I’m running the triple dcoe cannon intake with a MSA header. The intake manifold and the exhaust header are sharing the same stud along with the same washer. There is a difference of about .2000” between them. I bought stepped washers from zcar depot but they aren’t deep enough. Anyone with the same setup, what did you use that was thick enough to grind down? 

 

thanks!