Well, heat rises! So, if you don't put a heat sink or baffle of some kind this is what will happen. I'd put a baffle in or a pan of sand and learn to work WITH the heat difference rather than "fix" it. YMMV!
Nice looking job!
Southern Brethren BBQ Competition Team
"It's all about getting paid!" - Myron Mixon
"I love being hated in my hometown!" - David Hair
KingFisher Gator Rotisserie cooker, WSM, Stainless 5 burner with IR gas grill, Turkey Fryer, Weber JD Commemorative grill, slightly used Bandera chamber for future use as a cold smoker, Masterbuilt 40" insulated ELECTRIC smoker