Concerning the the weight box I used in that big Yak, I would like to express the reasoning here over the common method used by simply cementing lead or whatever into the insides of a removable glass cowl, using the box has a big advantage.

That advantage is the wear and tear of the cowling itself and its mounting holes, blocks and so on when a substancial weight is added to it. Even a simple nose up episode can cause considerable damage with all the added weight stress on the cowl itself.

John