Not sure about that particular front end, but what I'd do is measure the amount of oil from the top of the tube. A Harley manual tells you to measure the height of the oil from the top of the tube, with the fork completely depressed and without the spring. On my softail, they tell you to fill the oil to about 7" from the top. I over fill it, then take it back out with a pump (think hand cleaner pump) with the right length tube. This gets it the same on both sides. Then you put the springs in, caps on and you're ready to roll. A good place to start anyway.