so. is it dead tom?
did you pee a little? or do you want to give it another go?
mabye you should get someone high up at the opti-2 office and ask them for their opinion?
you probley should have topped off your tank with regular mix and kept it topped right up for a while im thinking too. however, calling the company probley couldnt hurt, you never know mabye they will want your old 1000+k HT to do tests on? because if that were the case i bet they would spring to replace it afterward if they were at fault.