I've been reading all the post's on the Rekluse Z-Start clutch for the past few weeks and this sounded like the modification I could really use, so last week I odered the clutch and perch adjuster, received it in 2 days. I read the install instructions about 5 times and the install went pretty easy, the perch adjuster was more difficult, but was able to get it installed properly. I only had to make one adjustment to get it working properly. I think I got a bit lucky with this. I live on Vancouver island and have an 01 yz426. There are miles of logging roads and some very tight, hilly trails that give me quite a bit of trouble, I was glad to see I wasn't the only one having to fight this type of bike on tight trails. The clutch made riding these trails much more enjoyable, not having to stress trying to keep the bike from stalling. I found the post by GeogiaBoy very helpful in setting up the clutch and what to expect from the clutch. I have it setup with the light spring so it will engage just off idle. I went riding for a couple of hours this past weekend and I'm very pleased with the way the clutch has worked so far. Thanks GeorgiaBoy.