Dutra uses weird junk to make his unknown abominations, tell me how many are still out there... cause I have read about more blowing apart than of those that stay together. Why anyone would want to use the wrong shape valve that weighs way too much is beyond me....and by "trimming", he means because the valve is way too thick and the Under head is shaped wrong that he really wants you to take it to a diamond wheel as if you were back cutting it and just cut the entire Under head of the valve.
