Elysion who used to be a member of Rg and is now at Diyaudioheaven did this around 4 years ago, his workmanship is superb. http://rockgrotto.proboards.com/index.cgi?board=review&action=display&thread=6957     Here are mine 

Elysion who used to be a member of Rg but is now with Diyaudioheaven did this very successfully about 4 years ago. His workmanship is superb  .  .  .  http://rockgrotto.proboards.com/index.cgi?board=review&action=display&thread=6957   These are mine, which I still use very regularly.