I told World Models about your problems with the canopy, and here is their response:

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Dear Sir,

I built one of the ZEN 90 prototypes using the same screw and grommet system and it has been flying for over 50 flights until it crashed due to pilot error. As I pointed out in my last e-mail to you, pre-matured failure may be due to overstress of the mounting screws. 2 canopies installed by the same person may have the same overstress problem. We use the same screw grommet system in all our models, and only once in a while we have pre-matured failures due to thinning of edges.

With best regards,

AirBorne Models
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Don't you just love this guy?

World Models needs a new US rep.