Hey folks! I got my s900 years ago. It has the stienberger trem system. When I first got her I realized that the system had a major issue as far as stability . Turns out the posts for the trem were bent. They are made of aluminum,, I had a friend who did metal workin make new posts of steel and problem solved. I must say in all honesty she is the sweetest playing electric I’ve ever played. Sings like an angel. Hope this helps !
Wayne