DUAL CS 505 reported correct
DUAL CS 505-1 reported correct
DUAL CS 505-2 reported correct
DUAL CS 505-3 reported correct
DUAL CS 505-4 reported correct
DUAL CS 506 reported correct but some customers but also
DUAL CS 506 - also reported NOT correct on serial #011123 & 052389 PROCEED WITH EXTREME CAUTION**

DUAL CS 506-1 reported correct
DUAL CS 508 reported correct
DUAL 521 reported correct
DUAL CS 521 - also reported NOT correct on serial #049293 PROCEED WITH EXTREME CAUTION**

DUAL CS 522 reported correct
DUAL CS 528 reported correct (however manual states belt 267 224 is instead correct, which we don't carry)
DUAL 601 reported correct

DUAL 1237 please report if this works on this model.
DUAL 1245 reported correct,DUAL 1245 also reported NOT correct by others PROCEED WITH EXTREME CAUTION**

DUAL 1246 also reported NOT correct by others PROCEED WITH EXTREME CAUTION**
DUAL 1249 reported correct - ALSO REPORTED INCORRECT AS OF 12/19 - PROCEED WITH CAUTION**
DUAL 1256 please report if this works on this model.
DUAL 1257 also reported NOT correct by others PROCEED WITH EXTREME CAUTION**
DUAL 1258 please report if this works on this model.
DUAL 1264 reported correct
DUAL 1268 reported correct