Has anyone checked out the PMG heads on eBay? I'm really interested in a PMG and would like to buy one from Utterpower, but have been told they are not available until some time in the future. I'm really looking at them for their surge potential. They say they can surge to just about double their rated output for a short time. If I can't get enough grunt to start my well pump I'm out of luck. My system came with a 3 KW ST head and that's just not enough. Will a 6/1 drive a 5 KW ST for the short surge I need to get well pump started? The 5 KW ST I looked at said it needs 7.5 HP for full output, but I don't think they had a Lister type single in mind when they said that, more like an air cooled Yanmar or clone.