The ink sponge in my lensometer has seen better days so I recently replaced it with the ink pad from Hilco (EX-3926) and used the Bombay Red India Ink (EX-3934) also from Hilco. Instead of just moistening the ink pad, all it did was gum it up and dry up all crusty. Am I doing something wrong? Is there anything I could be doing to make the ink pad actually absorb the ink without drying up? Thanks!