I've got a Venus with a .46FX and GMS muffler.
With all standard servos it weighs exactly 5 lbs. with 2 ounces of lead on the tail.
Plenty light.
Fuel tank works OK. but mixture is touchy.
My only complaint is the rudder pushrod setup.
It doesn't center well. I am thinking of mounting the rudder servo in the tail with a kevlar pull-pull setup.
Minus the weight of the long steel pushrod and the lead it should work great.
Power is sufficient on 15% but on those 100degree summer days it could use just a touch more.

NO coupling of any kind in knife edge UNLESS you exceed 40 degrees of throw.

With hard use the servo tray can come loose. Hit it with some epoxy.

Best $150 plane ever!