Steve,

Car's can be like this at time's I'm affraid, and it is demoralising. What I'd do is take a momment to think about things. There's no point in rushing to a decision. Everything is fixable that you mention, and you need to consider how to go about this. If you have'nt got the time at the momment then its probably best to store the car until you do have time.

Having a break from something until you've got spare time is often the best way as you can then approach your issues with more patience and see where you want to go with the car. The one thing I must say though is modded cars are rarely straight forward, and if you need a car thats just jump in a go everytime, then you'd be best off with something more standard.

Speak soon,