This was caused by an extended-thread shift stalk (Zanardi), our knob will countersink over the factory stalk, or, if you're using a Zanardi, I've always trimmed the overall length by another inch or so, which eliminates this concern.
Our knob is compatible with all M10x1.5mm Thread Stalks; in addition to Hondas, we've put several of them in Lotus Elise and Lotus Exige cars.
Audi generally uses an M12x1.5mm Thread on their shift stalks.
thanks, dammit