Block Hardware Package / Question

Hi Guys,

i have got the block hardware package P5249261AB for my SB. This one includes a new oil Filter plate and gasket.

Now i tried to put on the oil filter plate and saw that the gasket won´t seal, the Gap is more as twice as thick as the gasket itself. Checked it both directions to make sure, but it definitely wont work.

I searched in my old parts for the original oil filter plate and found out this one fits better but as with the new plate the Gasket is loose, not compressed.

The Block is from 1990, roller cam LA. The instructions say it will fit LA from 64-92 and magnum etc.

Somebody had the same problem? It seems i need to get a much thicker Gasket. Are there differences in the mounting pad for the oil filter???

Thanks for Info,

Michael