Only reading one texture

[Emanmaker]

Hello,

I had finished modeling a grain hopper railcar for "Rule the Rail!" The problem is that only one texture is applied to the whole mode instead of one side separately. I started the model as a solid block followed by a boolean to make the hopper shape and had to clean those ends by triangulating. But that seemed to be the problem once I started mapping the model. The model ends up being mapped with one texture for both sides. I tried to "surface" but that only comes out in triangled sections. I did try texturing through the triangled sections, but those adjustments affect the opposite side.

I did read other treads BTW, but they didn't seem to fit my case, so unless I didn't clarify the problem, if someone knows what I'm talking about, anything is appreciated....

Update: I scrapped the old grain hopper body with a new one and this time I reversed the modeling process by mapping the new body first BEFORE I triangulated and that did the trick.... Thanks and any possible help....