I purchased a Toddco driveshaft in June of 2011. After the install, it seemed I felt a very slight vibration, but it felt more like a wheel that was off balance. I don't drive my truck that often, so I never really looked into the source of the vibration. I greased the shaft at each oil change.
Well, two years later, the vibration had grown slightly worse. I had been suspecting the drive shaft for the last year (thinking it wasn't balanced properly). In the last two weeks the vibration grew in intensity substantially. I took the truck to a local drive shaft shop and sure enough, two u-joints were completely shot and the shaft was out of balance.
That pretty much put the final nail in the coffin for Toddco products for me.
Ok I greased all the u-joints and still got the vibration. I called bputah and they told me I would have to take it off and send it back in for them to do something. I'm gonna have it check for proper balance Monday.