My L2k is the only bass I've seen that used threaded brass inserts for the screws on the Battery cover. Over-Engineered perhaps, but it just goes to show that Leo was NOT KIDDING on these basses. Do they still do that on the new USA built ones? Mine also has a big brass plate in the control cavity that everything is star-grounded to. I fried the preamp while doing some ill-advised tinkering with the electronics ( the less said, the better), but was able to get a a drop-in replacement from G&L. Excellent customer service too.