I have a wheel barrow style compressor with a name of PowerTrain model number PT-6508GE, build date of March 2007, with a B&S 6.5 hp 900 series motor, and 14.2 CFM, working pressure of 135 PSI, and a MFG No. 03021330. I would like to know who built it, so I can order parts? I need a manual and parts manual. At the present time it works and pumps but will not idle down because the bullwhip throttle idle control valve sleeve is broke. The whole control valve and lead is 12 inches long. I haven't been able to find one of that length?  Thanks for any help? Barry