I have a Prophet 600. It's not very well known that if you use the Rev G 3340 (instead of original issue Rev F) that you will need to mod the synth to ensure performance within spec.

I have been sending my Polaris back to my tech a whole lot over the last few years, and have a long outstanding tuning issue on what would seem to be two voices now, it used to be one voice, but now I believe I have two that will not properly tune (always too high or too low by about 10ct+/-). I am wondering if the Polaris has the same concerns with different Rev chips? 

Here is the link to the P600 issue: Example on page 41 -http://www.synfo.nl/servicemanuals/Sequential/SEQUENTIAL_PROPHET-600_SERVICE_MANUAL.pdf

thanks!

Robert