The fork leg that is still tight will sag when you put the extra weight on it due to slackening the first fork, be very careful to only slacken the bolts enough (bit by bit) to allow you to get the leg to where you want it, if you slacken all the bolts too much it may drop down beyond where you want and then you will have a bit of fun trying to get it back again, so just do it slowly.
ytz14s-bs is what i have been using for years now, a bit more money but well worth the extra, these bikes need a good battery, 230 cca is what you need:thumbup
Replace the solenoid as well if not done already with a 100 or 150 amp one, also remove the brown connector behind the coolant tank, do a search on here or the AF1 forum and it can be found in detail.
Dont start the bike with throttle, fill the oil to only half way up the level tube or you get oil in the airbox, these are not problem areas just tips.
Battery and solenoid and brown connector are a must job as soon as you can:thumbup
Have fun:thumbup