Hi Matt, i've already bought the Mundorfs so, i'm going to have to give them a go now but, thanks for the heads up on increased treble. I'll be studying the sound carefully. It's ok to drill new holes in the PBC? I am not going to damage it in any way? I was thinking of placing double sided sticky pads underneath the caps to try and make them stable and to not put too much pressure on the board once it is replaced. Maybe the cable tie option would be more secure. The glue will not have a nasty reaction on the board or corrode it with time?