XUD9 ENGINE BLOCK DIFFERENCES

[Customb3]

So here's my problem any help would be greatly appreciated. Have a XUD9A block uses a crack shaft casting 182 or 620 part number oem is 0501H1. Here in the USA these parts are hard to come by. So I was sent a crankshaft casting number 136 oem part number 0501N8. The oem crankshaft had a 8 web crankshaft design while replacement has a 4 web design. Both crankshaft are identical specifications bolts right in no problem. The problem I am having is the trust washers are too thick. With oem thrust bearning installed can Not seat the crank down into the block. The tolerances are too tight. The thrust washer we have and tried two other sets are 2mm thick. Anyone ever have this problem or this crank won't work with this block. Any help is greatly appreciated!!!