Duke:
I was able to convince V-Mar (and they were able to convince me) that their models were of good quality and that I must have just received one the had "jungle rot" (they are manufactured in Vietnam). They sent me a replacement and it was just as bad. Both ended up in my club's trash bin!
The third one was a friend's who was afraid to fly his after he heard my story. On the first flight of his Stick, it snaped in half on landing. We stripped it down, reinforced the paperthin balsa with light ply on the fuse and empanage. It has since flown very well, but we avoid snaps and spins!
The GMS 60 that I purchased from them however has turned out to be a fabulous engine and in my H-9 Ultrastick 60 it rocks!
-Paul