You're worried after a week! I got my Kili Ultra at the beginning of November 2008 and I only just finished it last week and I still need to sort out the decals!
I felt like selling it a few times but I knew that was just the frustration of not being able to finish it. Now I have I must say it was worth the hassle and the wait.
Keep going otherwise you'll only regret selling it later. When you do finish it it'll be the best thing since sliced bread!
Sounds like you have the wrong aproach and attitude, i'm into old cars as well as bikes and i view them the same, i dont buy a 15 year old car and expect not to have to do some work to it, same with bikes, if i buy a bike or frame and there's bits and bobs wrong with it i just get on with it and sort it out, as long as it's not something major and terminal.