I haven't been keeping up with this forum, so sorry if this has been covered before.

I have been flying and enjoying my 28% Extra 300 Special for about a year now, but it has always had a tendency to snap on a hard pull up. It will drop the right wind and flip right over if I let it. It will even do it at low rates in certain conditions. To balance it side to side I have had to add weight to the right wing but with or without weight it makes no difference, it will still snap. The hinges are sealed. Any Ideas?