My forks can't handle my bikes wieght and sit in the fully compressed position, I knew they were crap the first day I rode it but now with the motor and batteries I need a new set. Has anyone ever replaced the springs inside the tubes? If I wanted to buy a nice setup , where would I look? How do you pick a make that you know will fit. What do I have to know? I may as well get good ones if that is possible for around $150. Is that possible? It's an Izip.