Hi Gary
First of all, you do have options for after sales support. Looking at lectron, it is just the common copy of the old ex7 honda.
I have one called A Viggen 2500
http://www.autoone.net.au/upload/VIGGEN.pdfMicky Blu still do them and he has good after sales.
Gentrax also do them (though they have changed mostly to the more squared off design one.
I emailed regarding mine stalling - gentrax said 'inverter board stuffed - that would be $200'.
The bloke from micky blue said 'clean out the carby and adjust the idle up a bit, wack a high start up load tool on and keep adjusting until it doesn't stall when loads applied. If all else fails inverter board.
Worked straight away with higher idle, so you can guess who I have a higher opinion off
How old is your oil?, what grade did you use and how full is it?