My Question is When you broke in the cams on the 575csi's did you use only the outer springs or did you use both . Andy help would be great . Thanks !!

Im not an old school Merc tech but "back in the day" on the race car engine stuff people would remove the INNER spring for break in.

Thankfully for us, all our stuff had solid roller cams in them which = no camshaft break in.

You put a bottle of that Comp Cams break in stuff in the oil ?