How do you like your spindle? Did you replace the HTD pulley or are you using it. Do you regularly run at 12000 RPM? I have one currently waiting to be installed.
I like it! i use the HTD pulley but since the begining it's badly trimmed so it vibrates at higher RPM's, i never runned at 12k rpm, max 6k5 because of the Servo motor that has only 8k