First, I don't have a clue how the struts are attached on a Sundancer, so if I miss something here forgive me.

A few big bipes in the last three years or so have been produced with what I consider to be extremely sub-standard methods for attaching fittings, struts, cabanes, and strut to wing attach points. Some have had as little as a small hardwood block that a simple sheet metal screw was used to make a structural attachment of a critical component. Some didn't even have the hardwood block, but simply suggested that the balsa be hardened with thin CA to harden the threads cut by the sheet metal screw.

This goes against everything that has been developed by modelers over many, many years of biplane building and flying. Yes, you can join two objects with a simple machine screw and nylock nut but you have to have something solid in the middle to be attached. Buyers should be looking for hardpoint inserts such as "T" nuts set onto hardwoods for a strong and lasting attachment point. Hard ply tabs, not bamboo/luan ply, for "I" struts is something else to look for. Aluminum angle brackets that are attached via a machine screw into a blind nut is another method of attachment.

Until we as modelers stop purchasing products designed to self destruct industry changes will not be made. Look at this stuff before you make that purchase decision every time you can. If it does not look like is designed with long term strength in mind, don't buy it and tell the dealer why. That happens enough and changes will begin to happen. If you get something that clearly was not designed with structural integrity in mind, then make the changes that need to be performed before you fly it. Not doing so sets the stage for a crash at a time and place yet to be determined. You may not be able to control the aircraft well enough to avoid serious injury to yourself or others when it happens. And it WILL happen!