Salut Thierry,
Yes, that's the same problem I encountered when I went looking for H3 35W bulb, no one seemed to have them in stock.

With my "new" TBA, I got some of those Xenon blue bulbs that Brent (newspeedmaster.com) sells. I believe they are 35W for the lightbar bulbs.

I also replaced the headlight bulb with Xenon blue bulb. Here's the weblink: Xenon Blue bulbs at Newspeedmaster

Ils sont tres bon, je suis tres heureux avec les deux.
Bon chance,
Steve

Blue/White 2007 TBA, Thruxton needles, Unifilter, AI removed, Polaris Bellmouth, Bubs, Nology Coils/wires, Lightbar, Ricor Intiminators, Hagon Nitros, Tall Sissy Bar w/luggage rack, Dart flyscreen & Lowers. 130 Mains, TrueGel Battery MG12-BS.