I had to be inovative as well:
For the rear due to the bridge not having a hole. Yea, I could have drilled one but I have this thing of leaving things as purchased or retorable to that state.
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In the front, I used a blank slot cover from one of my desktop PC's card cage:[IMG]

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No the nut has not fallen off yet. The big problem is the lack of clearence for the brakes. The both rub the fender when applied. More in the front than in the back. With the clearence in the front I could have gone above the brake but then would not be able to release the brake for tire removal