Hi all. Firstly I apologise if this has already been covered in another thread but could not find anything in searching. I've just picked up a used CR4M. Although I've played bass guitar for 20+ years this is my first venture into EUB and as expected its a major learning curve. For optimum setup, how much relief should be in the neck of the CR and how is this gauged ? Is it a similar to the way a bass guitar neck would be set with a credit card width between string and fingerboard whilst fretted at 1st and 12th position. Also what is the lowest acceptable string height to fingerboard that other players have found useable. Any advice is welcome.