Well if you live in the USA (I can't tell from your profile), contact Tamiya USA via their website and give them the kit number, mising part numbers, and the circumstances regarding their loss, via e-mail. I had a great customer service experience with them regarding parts for their 1/350 USS Missouri earlier this year.
F is for FIRE, That burns down the whole town!
U is for URANIUM... BOMBS!
N is for NO SURVIVORS...
- Plankton
LSM