RE: Aeromarine cat 18
I am going to use my CMB .21 with the zoom carb. ,been sitting here might as well use it , my radio box . I decided to build a new box .The one that came with the hull had some scares on the top lid. ,not good for tape. I did notice a guy that used a cover that went all the way out ,even with the box. He had some foam gasket material along the top edge. held it down with rubber bans ,never leaks he said . my give it a try