Very nice looking bike, but i'm abit worried about the wholes you drilled in the steerer tube, on the fork. ive made a little test (urban 07, 26" geometry, 6061, 100N) that shows that the upper whole got 50%off the resistance of the fork. (I'm a rookie in COSMOS, and the results are only for comparision between the not drilled fork and the drilled one. took independently, the tests are not accurate). Un Drilled Fork: Drilled fork. you cand see maximum stress area (RED) in the upper hole. -50%