What other armpad plates will fit Profile J-4 brackets?

I like the setup of the J4 brackets, but I hate how wide the F35 pads are. You really can’t get the pads narrow at all without basically putting the extensions right next to each other.

So, does anybody know what pad plates might fit? So far have tried Bontrager & Zipp Alumina, to no avail.

Thanks.

I haven’t done it but I bet you could drill another hole in the aluminum PD arm rest plate. I think that would let you get about 15mm narrower.