Trubleshtr, If you havnt yet recieved the servos, then email him and ask for the other encoders to be put on them. He has said on this forum that he would do it for free. I didnt take up the offer because I am in Australia and didnt want to wait, nor did I want to have to fit the new encoders. If yoiu read his second post in this thread you will see his offer
http://www.cnczone.com/forums/showth...&threadid=3052
I think the geckos dont handle enough amperage for these servos, and from what I have read the Rutex are more fogiving of errors.
EDIT: I forgot to mention the prower supply. The servos are rated at 40volts constant, and 60 volts peak. Speaking with someone else who used Amatec servos, his advice was to run the voltage a bit higher to get them to perform. I had a transformer wound for 36 amps constant and 36 volts AC. After the rectifier it comes out at 50 volts DC. My servos dont even feel warm running off this setup.
Oh yes the power supply cost me $350 AU (80% less in US dollars) I was advised that you need 2000uf capacititance per amp to stabalize the ripple. I have about 14 capacitors in paralell.