Inquiry (采购产品): S201M Regulator CAT G399 Engine using S201M. Spring Range 3.5-6.5, Port Size 3/4. I want to run on propane. Do I need to change my port size and or my spring? If so, where can I get them? **** Hidden Message ***** Clay Hutcherson 77377 USA Company: Hutcherson Diesel Services Inc. Title: Service Technician E-mail: clay_hutcherson@yahoo.com **** Hidden Message ***** clay_hutcherson@yahoo.com
