Hello All. Its been quite some time since I posted. I put in a Toto Ultramax about 6 years ago and its been working great.
Recently, whenever we flush the toilet, it makes a higher pitch whine followed by a groan.
Please see this link for a video capture of the problem: http://www.youtube.com/watch?v=oXp6x...e_gdata_player
Given I installed the toilet, I feel confident I can replace the Gmax mechanism (if that is, indeed, the problem).