I have one myself, and will be building it after the online build project. I have been told that it flys pretty good if you replace the plastic pieces with wood. Replace the heavy wood. And core the wings. I am sure there are other improvements that can be made.

I was also going to sheet my wing with 1/20th instead of the 1/16th, and not use the blue contact cement that was recommended in the instructions. 

hope this helps, happy building

Greg

The Mustang stunter is a cool plane, but somewhat dated and the kit builds extremely heavy.  The small wing + excessive weight = undesirable.   If you replace most all the kit wood, substitute wood for the plastic, core the wings, stretch the tail and stretch the stab/elev and it'll fly well. 

We built two, the first came out extremely heavy and does basic maneuves (wingovers and loops) but anything more serious (overheads) isn't possible.  The second has all the usual modifications and then some and it's never been finished.  With a 35-40FP it's overpowered, and its really too heavy for a Fox 35. 

It's a neat kit, but I've seen a bunch of them built that didn't amount to anything. 

I'd second Andrew on this one.  A pretty looking design, but usually way too heavy for pleasant flying.  If you can build it down around 40 oz. it should do well, even without any aerodynamic mods.

Nope

Great to read about weight problems, now that I finished the partly built one somebody gave me.  Guess I'll have to weigh mine now.  It actually has a Super Tigre 35S in it.  I'll be curious to see how it flies.  The comment about the bellcrank mounting has me worried, though.