Hi, i am currently buying 426 clutch parts to install into my wr400 so i can buy a rekluse core 3.0. I have pretty much succeeded except for the push arm, part #5jg-16381-00, which i am not actually sure i need. can anyone tell me if i need it. I was speaking to someone on here but cant find the post. I can understand the need for a longer or shorter push rod. But the arm i thought wouldve been fine or minimal difference.