I have 2- 2003 TTHP's, both 48" 17 Kawi,es models. The one I just bought about4-5 months ago, is surging. This happens when you go from low to fast idle (under no load). It surges about 5-8 times and then smoothes out. It has been back to the dealer twice. They are telling me this is normal and "it's just the gov. trying to find the load". My older 2003 TTHP surges maybe 1 or two times and then smoothes out. They don't seem to surge at all, when they are under load. Is what they are telling me, true, that this is normal and there is nothing that can be done about. Thank you for any help you can give me on this.