I only use four of the moongels at the corners. Try it that way and see if it changes. You mentioned earlier you use the Herbie tube dampers I believe. I use them too and prefer them. I run my dampers all the way to the top. If you have them in the middle try moving them up if there's room or completely off.
Maple is definitely a softer wood and just like drums it will be a little warmer sound. Bamboo is very rigid and dense. The moongel pads are doing the fix more than the bamboo shelf I suspect. Try the moongels only; directly under the stock feet or your preamp taking the shelf out of the mix. Try the other tweaks noted above first.
Maple is definitely a softer wood and just like drums it will be a little warmer sound. Bamboo is very rigid and dense. The moongel pads are doing the fix more than the bamboo shelf I suspect. Try the moongels only; directly under the stock feet or your preamp taking the shelf out of the mix. Try the other tweaks noted above first.