Originally Posted by Rolo
Don't pay any attention to the people who are claiming that this is an inherent problem with the FIH knot. Experience has shown that the tie will drift to one side north of the equator and to the other side when you are south. Importantly, the tie will drift more as you move away from the equator. The problem is easily remedied be leaning slightly toward the drift. This becomes noticably more difficult as you approach the arctic circle which explains why most Lapplanders stick to bow ties.
It's because the tie gets wider in the part that's wrapped around, so the FIH is inherently angled. There are cheesy plastic things you can buy that attach to a button on your shirt and go through the loop on the back of the tie. There are also less cheesy clip/chain things or full-on tie clips, which if you can dig the look, also have added bonuses (like keeping your tie poofed out like in an ad instead of hanging limply down). Or, use a half windsor, or just crank it down tight and offset it slightly to deal with the slant. Or start the pimp lean method.