 Joe,
There is something 1-cent & 5-cent coin can't do! After you tweaked my system, it has become more sensitive to changes (or should I say I'm more sensitive to be able to notice changes?). All along my solidsteel racks are spiking on $1 coin. One night out of itchy hands I changed them to 1-cent coin... It worsened by a lot! Then I changed them back to $1 coin and my tapping feet are back in business. Guess what I realised when I took the 1-cent coins out? All of them had a hole in the middle! I then put my itchy hands at work again and changed them to 5-cent coins. It was a lot better than 1-cent but not as good as $1. I guess it might be because when you tweaked my system, the $1 coins was already in the equation - the change of coin jeopardised the balance? Maybe 5-cent coin will be acceptable if done with other tweakings at the same time? Yesterday two of my friends spent a few hours listening in the evening. They were both stunned by the changes compared to the pre-tweak performance. After one of them left, the other requested for a 'crystal trial'. He asked to take away some crystals and was amazed that each piece has its effect! He said he'll be going to Lucky China Town tomorrow... | 
Hmm...I guess that is purely because a S$1 coin is 100 times more valuable than the 1-cent and 20 times more than the 5-cents???
