Machining issues.

Is your crank steel? Is your crank cast? 5070m's to be used with a cast crank having a bearing width of .8815 for positions 1,2 and 4 and 1.108 for the thrust.
4092m's to be used with the steel crank with a bearing width of 1.039 for positions 1,2 and 4 and 1.255 width for the thrust.
Are you sure "HE" suggested using .020 bearings on a .030 crank? THAT is stupid.