Doing the fork seal on my 99 wr. I have done the 35 mm film trick, but i have to replace the oil in the forks anyway so I figured I'd do the seals. I did a serch and see that you can use a pvc pipe as a seal driver. What size pvc pipe? How do you drive the seals back in? Seems pretty basic, drive them in as evenly as possible with the pvc or a seal driver till they stop?