Chaffer adjustment conversion

I am putting the chaffer adjustment conversion on my 9500 JD. I am to the point that i need to drill the hole this is where the problem comes i the adjuster lines up with the oval slotted hole you see of to the left in the attached pic. I am assuming this is a pic being installed on a 9600, the conversion kits are the same for the 9500 & the 9600. Any suggestions

Thanks