Very nice engine you have here. Geargiaccel and Geargiarsenal actually form a great loop if I'm not mistaken. Summon Arsenal, tribute out for Accel. Accel dies, Arsenal returns to the hand. If you have Geargiano MK-II as well, shenanigans ensue.
I can see why you'd tech in the two Machinas, though I'm a little more intrigued on the Drill Jumbos. It's a nice enough card give its level boost and piercing, but I'm curious to see what Genex Ally Birdman would lend to the Deck. Potentially Normal Summon MK-II, get back Accel, MK-II for Birdman.
That said, it's not a critique of your deck at all, just me wondering. I can understand the back of Heavy Storm in a deck running Solidatory, but I do have a question: have you tried Machina Armoured Unit?