I purchased the Babicz Full Contact bridge for my Gibson SG bass as a direct replacement. It fitted perfectly. However, when restringing the guitar the bridge started lift up as the tautness of the strings tilted the bridge. This was due to the change in leverage made by the extended length of the bridge beyond the anchor points fixed in the guitar body. These original brass inserts were a friction fit and in my Bass they were not really a tight fit. However, I took the guitar to my local luthier, which just happens to be my brother. After some thought and discussing over coffee, we decided to epoxy resin the brass inserts back into the guitar body. After 24 hours we refitted the Babicz bridge and restrung the Bass with new strings and Hey Presto, one Thunderous Bass was born.
The moral of the story is to ensure all modifications are carried out by a Professional luthier.
Thank you Thomann, this bridge has made a huge difference to the sound of my Gibson.