@Andy79Z28 I was reluctant to drill that hole out to 3/8” as it didn’t leave much “meat” on either side. I ended up drilling a second 1/4” hole a couple of inches below it, and bolted a piece of steel to the arm on which to attach the handle. That roller makes a LOT of difference. My understanding is that Inline is working on a handle for the APP. They’ll probably just re-fit their current one with a 1/4” shaft. He’ll sell a jillion of them.I modified mine - drilled and taped the hole and there you go. Inline fab roller installed.