Milling ex manifold Question

View attachment 1715823522 View attachment 1715823521 View attachment 1715823522 I measured the center pair of manifold port flange thickness on the 340 pass ex manifold & it is 1/2", the same as the magnum manifolds but it overall is way wider. I took the magnum manifolds in to be machined & i told em to take off 1/4 which is a 1/16 more than recommended but I am getting a bit frustrated. Earlier I had used 273 mtr mounts along with the thick "brick" insulators. I used several washers on the dr mount & welded the triangle ear on the pass mount & the motor tilted severely lower on the driver side so I shimmed the mt/insulator up 3/4" with (2) 3/8 thick plates to level it side to side. here are pics of it. Any more thoughts on how to straighten this mess out? thank you!View attachment 1715823521 View attachment 1715823522