I have three of the "lemons" and the first one I purchased (probably 5 years ago) is exhibiting a weak flush. I called the 800 number and got an answering machine but before throwing in the towel and ordering a Flushmate replacement, I called the 949 number. A woman answered and transferred my call and someone picked up immediately. He was very helpful and asked a series of questions. He said I needed a new flush valve control assembly and offered to send me one - free for the part, $8.99 shipping.
I then told him I had read about the general unreliability of this unit. He was very familiar with this thread and assured me that this part is undergoing "continuous" redesigns to improve it. I didn't say I believed it, I'm just relaying what he told me. But I decided that it was worth a try to spend $9 rather than $140 or so for the Flushmate.
When life hands you lemons, get a new flush control valve assembly!
If I had the choice originally to buy a U.S. made system rather than a Chinese one, I would have paid substantially more. Not because that U.S. made items are necessarily better than Chinese made ones - the Chinese can make good products just like U.S. companies can make junk at times. I just would much rather support the U.S. manufacturing base. I think the best hope we have for U.S. manufacturing is for democracy to sweep into China with the eventual (and probably very gradual turn to) fair wages being paid to their workers. Wouldn't that be nice?
Snowshoe - Not Just a Dog