Best source of information is flyhusky.com:
http://www.flyhusky.com/Welcome.html You have to sign up to post, just to avoid spammers.
In short, you cannot legally remove the aerodynamic counterbalances from the Model A-1, A-1A, and A-1B Husky ailerons. They are there to lighten stick forces, and in any case, you DON'T want to fly without them. They are like power steering. They are also called for in the Type Certificate, so without them, the airplane is not airworthy. The Model A-1C (and all B models since spring of 05) have a completely different aileron system, and no counterbalances are used in that wing. It is a MUCH nicer wing, and aileron system, but nothing like the old wing, other than the airfoil shape is the same.
Aviat can sometimes be a bit slow getting parts to you. That, unfortunately, though is true of many if not most small airplane manufacturers. In fifteen years of flying Huskys, and around 4,000 hours in three of them, I never had an airplane down for more than a day or so for lack of parts. That may not be a universal response to that question, however.
Like most manufacturers of light ga aircraft, parts are not cheap. That said, buy some Beech or Cessna parts, and your definition of cheap may change as well. There is no such thing as cheap airplane parts, even used ones.
There are not a lot of used parts available for Huskys. They've only been built since the late 80's so most of them are relatively "new" compared to a lot of airplanes, that is.
They are great little airplanes, and since they are all relatively new, most folks find that less maintenance is required than for many much older airframes.
MTV