I just thought I would share with everyone a simple modification which I did to the TP60 head-shell of the TP16 Thorens tonearm. I can now mount any cart, whether the cart screws from the bottom or from the top. The original TP60 configuration only allowed screwing the cart from the bottom, and with specific types of bolts, metric configuration. So cart mounting was limited. This is what I did: Gently push up against the metal from the underside. I used a small screwdriver without placing too much force. If you use a sharp object and apply too much force you may make an indentation on the metal which will show from the top-side. Something small (and blunt) should do the trick. Even a Q-tip: Top metal plate is now off: Gently pry-off this plastic clip by applying leverage on its extreme left and right: Once removed you should have this: You can now remove this piece: After removing the small piece where the bolts were originally meant to be inserted, you should have this: You can now mount a cart whereby the cart's mounting configuration requires the bolts to be secured like this: Simply place the metal cover back where it was: Keep the two pieces removed (pic 4 & 5, the black plastic thingy and the grey piece with the two holes). They can be put back the way they were and the head-shell returns to its original state. Thought I would share. Cheers all!