Now that I'm older and wiser... Well I'm older anyway. I used a C Clamp to bend, dimple, flatten the tubes as necessary. Works pretty good, you can stick a nut or a piece of metal between the clamp and tube to get the desired bend.
I like that I will have to remember that for next time. Although after how frustrated/angry/pissed off/infuriated I got installing those headers there was something relaxing taking a hammer and going crazy on them :twisted: