Nice!
I went a similar route: I had gone through 2 sets of Focus A's on my 4XX--the original and a replacement set, the latter of which had such bad glue that I couldn't even install them without them tearing off. I used them for a while with some electric tape but had to finally let them go. I had done the oval shape cut on another set of left-over mounting rings (that I had originally mounted a set of Brainwavz Hybrid on), and I was looking for that oval shape again for another set that provided a closer-to-Focus A sound.
I almost went with the big boys (round XLs) but I ended up getting the Brainwavz Replacement Hybrid Memory Foam Earpads with the oval shape. They don't sound quite as good as the Focus A's but I'm pretty satisfied now and the quality compared to the Focus A's (as far as the glue thing) is off the charts..
My ears are on the smaller side and the lobes just touch at the bottom of the pads but it's almost unnoticeable and they're pretty comfortable overall. The sound is nicely balanced. Were a bear to install over the rings.
https://www.amazon.ca/gp/product/B00ZGGG3KY/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1