Marvin Infinity Screen Plunger Pins

I have 9 year old Infinity windows and the plunger pins are starting to fail. Hard to believe Marvin would use plastic plungers on these windows. As someone else mentioned the Marvin pins are 5/32" at plunger end and the remainder is about 0.118". The holes that are in the screen presently are 13/64" on the outside of the frame and 1/8" on the inside. It looks like I would need 70-008 pins. My question is whether the 13/64" hole already there is large enough. What do you think?

On my earlier post I meant to say that it looks like I would need the 70-009 pins. The step drill for this size is 7/32" x 1/8" and the existing holes are 13/64" x 1/8".