The location of the already installed blocks including the TSH0392 protruding lift bails were remeasured, and it was found that modification of the Standard Lock-Block Flat Top block was not required.  A Standard Lock-Block Flat Top block was installed in the place of TSH0487 in drawing TSH0372, and the remainder of the blocks on top were installed.  It was a tight fit for the lower two Half Height Lock-Blocks, but future removal of the BD shielding and SS plug should still be possible.  Drawing TSH0372 will be updated to reflect as-built status.