Lazy design with good intentions?? - Manticore Arms Tavor Gasketed Port Cover For Iwi Tavor

So between Midwest Industries and Gearhead works, this is the only one with a gasket. Great. The gasket would be perfect if it wasn't cut a millimetre short between the top and bottom. It's not just the top though, its not wide enough either. I did positioned it to give it the best covered with the gasket provided, and with the whole unit there is still a significant crack all the way across the top and in one of the corners. This was very easy to see with my flashlight shining through the butt of the rifle. It's actually worse than the stock cover in performance. It's only benefit is adding a QD mount for single sling setup, which is really unnecessary. I also like the aluminum finish. However it does nothing but addw weight to my rifle. Im sorry but Im really disappointed with Manticore arms here. Better off just buying a thermal gasket paste and DIY.