Chuck,
Some system II amps are known for this problem. It all really depends on how much amps your pulling on this one cascade where these amps burned the connectors at. The system III amps do have the blue (high amp/currect) connectors on them to resolve this problem.
> I just had 2 system 11 amps burn up the push on f connectors on the module, is this pretty normal and do the system 111 amps have the same problems. Chuck