Origin point between pixels

So I just started using Construct 2 and I'm making a game in which there is a turret attached to a body. The sprites I'm using for these objects are uneven, meaning I (seemingly) can't put the origin point in the middle of the sprite. This makes the sprite look weird when rotating, as it doesn't rotate around its center but instead around a point slightly off from the center.

Is there a way to fix this? It might be really obvious and I'm just being stupid. Any help would be appreciated!

(Note: I posted this in beginner questions earlier, but we didn't find a solution. So I guess I'm posting it here now.)

you can ask the question as many times as you like, it doesn't change the answer... :)

the base sprite must be one pixel wider so that the rotation point can be in the middle. No one will be able to see the difference - other than the turret rotating better!

here is a quick test I made to look like your tank:

https://www.rieperts.com/games/forum/tank.capx

you can also set Image Points and Origins with decimal places. So if you have a circle sprite that is exactly 17x17 you can set the origin to 8.5 x 8.5 and it will spin "correctly".

Otherwise if you art is off, then that is an art issue. but you can always change the origin in Construct.

Well I suppose there's no solving it unless I change the art.

Thank you all for your help, it's much appreciated.

if you want, you could post a sample capx with just the tank body and turret for me to test. Do you have a lot of different tanks?

yeah make a new temp project and copy and paste the art and the spinning code. then post the Google share link here and we can look at it for you.