Help to optimize my deck V2.0

This is the third deck i am about to push into the meta: Heimerdinger / Ezreal / OTK

The deck focus on keeping Heimerdinger alive with Bastion, then Turret Spam. 
It mostly wins because the opponent can't keep up with turrets, but the main focus is to buy time until Ezreal levels up.
In very long games, Shards of the Mountain generates enough Gem cards for an OTK.
Hush works very well alongside both champions.

I am experimenting a great deal of sucess in my ranked games, so I think the deck is very well optimized already, but maybe someone could catch some improvement. 

The flex slots are:
3x Jury-Rig
3x Solari Soldier
3x Guiding Touch
1x Hush

I don't think anything else is replaceable.

Thoughts?

Didn't you try to use a Tri-beam Improbulator?

Two thoughts that come immediately to mind are dropping 3x Jury-Rig, 3x Solari Soldier in exchange for 3x Zaunite Urchin, 3x Spacey Sketcher.

I also like trying to squeeze in Starshaping, but I don't see an obviously slot for it.

Quote From OldManSanns

Two thoughts that come immediately to mind are dropping 3x Jury-Rig, 3x Solari Soldier in exchange for 3x Zaunite Urchin, 3x Spacey Sketcher.

I also like trying to squeeze in Starshaping, but I don't see an obviously slot for it.

Interesting as both Zaunite Urchin and Spacey Sketcher were included in my 1.0 version, so we are in the same page.
But after some playtest i realized the deck needs help to stall until Heimerdinger gets online, and both cards are not very good early plays, on top i was also struggling on what cards to discard.

Solari Soldier proven to be much better then expected. The true goal behind this card is NOT to play it on T1, but use him to block an attack from a key unit on later turns. For example, you hold him in your hand until something like Elise/ Kalista is played, then play him to prevent attacks for that turn. 

i also tried Starshaping for a while, but dropped as i think its a bit too expensive and didn't need the extra healing.

Quote From Author

Solari Soldier proven to be much better then expected. The true goal behind this card is NOT to play it on T1, but use him to block an attack from a key unit on later turns.

Wouldn't Solari shieldbreakerBADCARDNAME be better? Or does it have to cost one?