Someone just posted a built Revell snapper Under Glass, and I took a good look at it. Only thing I can see that's "too short" on it is the cowl induction bulge, and yes, that's too short. Is that what you meant?
When you said "greenhouse," I first thought you meant the roof area. But I'm not seeing any obvious problems there. Did you mean it's too short in length, or in height (if that's what you meant)?