might be mistaken as a long time since I did it but as far as Im aware on a busa the diameter of the forks going thru the yokes is less than the bottom half of the fork leg. This limits how far you can lift the forks thru the yokes as the larger diameter wont fit thru bottom yoke, unless you have new bottom yoke made.
Will say that by lifting forks thru the yokes as far as they will go has no detrimental effect, cant actually say how much it lowered the front as I never measured it & certainly didnt mess up the handling,, may have made it a little sharper,, but didnt really have bike long enuff b4 dumping the front down to make an informed comment.