F8F-1 and F8F-1b missing VSI / Rate of Climb Indicator?

Both the F8F-1 and F8F-1b are missing Vertical Speed Indicators (VSI)/ Rate of Climb Indicators in the cockpit. This is very annoying since its rate of climb is its greatest strength, and it is difficult to optimize the correct angle without the VSI. I do not have a good source for this, but all the pictures on Google show the F8F with a VSI gauge. Why is it missing in War Thunder? There is no good reason to to omit it IRL, as far as I am aware. I would rather have a virtual cockpit than continue dealing with this.