Exactly what i was going to say to, without insulting your intelligence you do realise the clamp can slacken off using a allen key (or even your finger if its quite loose already). I just mention this as i know you only just bought your geoYou've undone the top feed neck screw and released the clamp right? sounds stupid but the amount of times I've seen people try and place a hopper on a feed neck that's tightened as far as it will go is amazing.
Funny as you like i took my rotor from my ego and it went straight on my mates geo with zero problems...i think the magic word is allan key???You've undone the top feed neck screw and released the clamp right? sounds stupid but the amount of times I've seen people try and place a hopper on a feed neck that's tightened as far as it will go is amazing.