Tamiya should get back to them pretty quickly.
I also recently orderd some parts for the FW24 got the payment instructions within 2 days, paid yesterday should have part tomorrow or next day.
Son decided to check the Front wing out and snapped it clean in half, the whole runner has cost me 450yen (incl shipping).
OTOH, nothing beats Aoshima for ordering parts, type a simple e-mail and wait for the part, pay upon arrival.
FWIW, NEVER EVER order parts from bandai they are way too expensive.
Charged me 60Yen PER part and the way i ahd to pay cost me a fortune in handling fees.