I've got a 4270 and a 4271 set of Slicks. Can anyone tell me if they are still good to return for cores?
I've called a few places and can't get a straight answer.
Only the 4000/4100 series are the throw-away.The 4000/4100 series and 600 series may not be used for core credit.
I bet they will take the 4200 series Seth.