i would also try this first. my travel agent who is good with jl can be reached at 714 428 1328 iirrc. email me if that doesn't work and i'll dig out my us cell phone.

second to that, i woud advise you to redeem an intra-asia award ticket from 20k miles and try to use the return within one year.

third, if you do end up dropping 450, i suggest you buy up to c. c is nothing special on that route in any carrier, but the price difference should be minimal