I've had 2 WM Planes
The .40 Ultimate I had was a piece of junk as far as the lack of glue was concerned. It lasted 6 flights before I retired it to the garbage (I'd rather spend my time on a decent quality ARF). None of those flights was a crash, the closest was a deadstick landing in some long Pasture.(4" high which is long pasture by Australian standards). The amount of airframe components that came loose in those flights was abysmal at best and it got to the point where I didn't trust it at all.

I currently have a 26cc Extra which I have just maidened. It is built a little better but at least it is large enough to be able to reach in and do something about it.

Having said that, Both planes actually flew well with the CoG and deflections set as per the manuals.