Ok here it is....
(Crap this has been posted so many times before...)
Search function dudes....search function.
The flange where the carb meets the intake / throttle body rarely warps. It will if over torqued, but very rare.
This has an o-ring seal. Take a straight edge across it and see if the damn thing is warped. Simple.
The bowl to carb body has a gasket seal. Now here is where the arguments begin.
I personally do not think the bowl warpage will do anything, other than possibly leaking fuel when engine is tilted up and not running.
If the bowls are warped, and engine is in running position, and leaking air at the bowl gaskets, so what? There is a vent to the atmosphere that makes sure there is atmospheric pressure above the gasoline level in the bowl at all times. So what if there is a leaking bowl gasket? Other than the fuel spillage......
If spray from your test is hitting the covers on the side of the throttle body, as Fazt suggests, then the engine may pick up and go like you state.
The covers might be a plate with gaskets, or they might be welch plugs staked into the sides of the throttle bodies...not sure on your model, but based on your post that it is a 1995 model, should be plates with gaskets.
So, do more testing. Spray directly on the plates on the side of the throttle body, avoiding the flange area. See what happens. Press key in while bogging (pulse it in, out, in, etc.)... See what happens......I bet it takes off.
If so, lean in the calibration pockets, with clogged metering holes. My term for "calibration pockets" is the same as Fazt's term "transfer covers".