Dont whine! j/k.
but really, if you ask me it should be taking you some bit of time to get it where you want it and even then you will always find something else that you want to do, and the more time it takes you the more pride you will have in what you have achieved, if you bought a car that was all the way done then you bought some one elses job and when people give you a complement by saying "nice car buddy" they are not really talking about you but if you did the work then you can say with a wide open smile "thank you" and you will feel alot better when that day comes and you will look back on how much work you did and how long it took you and feel it was well worth it.

good luck man and keep your chin up.