Southwest Windpower H80 and 200 wind turbin warning.

I have two H80 turbins and both have had extensive repairs within the first two years of service.  I have went through four sets of blades, four sets of bearings and bearing upgrades, and several furling bearings.  These units are not designed very robstly and will only last for months not years under windy conditions.  Southwest Windpower refurbished both units this last time at around $800 and one lasted two days! The other is still up but who knows for how long.  The 200 series use the same parts with a user adjustable voltage setting.  The company is always willing to sell me complete assemblies but no individual parts.  The warning is; if your winds are not over 20 mph then put one up but anything over that is pure wasted time and wasted countless hours erecting and taking down/repairing these things, not to mention numerous insults from the engineering staff at Southwest Windpower.