I run front and back about 3-4 lbs low. Nothing major but it helps cut down the wobble.
This gives the front a little less "tank slappin" on setting it down from a wheelie. I havent noticed a difference in endos tho
the back is a litlle easier to keep straight with a couple less PSI
I will be tryin to lower the back tire pressure lower (20-25 lbs) for the slow (20-25mph) wheelies. right now if i try slow ones it goes side to side way to much.
If Im going for long rides I put the pressure back up, handles alot quicker with the right PSI