The north elevator shaft at the Block 5 construction project had downtown Rapid City on shaky ground Thursday. A failed shim caused the north elevator shaft tower to tilt about a foot on Thursday ...

The slot in the DBM Shim Shim block for precise alignment T-Block, and the oversize mounting holes in the movable component, allow adjustment in two directions when two or more DBM Shim T-Blocks are ...

Its also slightly more expensive.<BR><BR>Using a shim is a terrible idea regardless. Cut the block, get a new one, or just use a heatsink. A shim isn't going to work well enough to be worth it ...