I too despise the cyclops. I replaced the crystal with one of Harold's SKZ Stargate sapphire crystals. I bought 2 more SRP Stargates and used generic sapphires from Borel and they fit perfectly. The flat generic is 31.0mm x 2.5mm. I reused the original gaskets.
I have two MK2 Stargates, tried to remove the cyclops from both by soaking in acetone for a couple of days, hammer and chisel and an oven on gas mark 27 million for an hour. I do not know what glass adhesive Seiko use but it is bomb proof. One did come off eventually but the chisel scratched the glass so i bought a Sapphire domed crystal from yobokies for one and a flat generic Sapphire for the other.
Please let me know how you fare, and good luck:93: