I found a brand new GCB-100 wah on eBay and bought it last year. I soon found out why they replaced it with the 105Q: it has a serious volume drop when engaged. I tried but couldn't get any straight answers out of Dunlop as to whether the could or would fix it. Has anyone here fixed the volume drop on one of these, or reasonably think they know how to fix it? If needed I'll make up a diagram for reference if anyone wants to help.