The scooter I just acquired, 2003 FLSTFI, has been lowered and I would like to bring it back up. Do I need to pull the lowers off or just take off the caps to install the factory height springs? I'm assuming just pull the caps. I'm wondering why when I put the bike on the jack to change the tires the front end did not fully extend? I'm never gotten into a front end so this is why I ask.