Leaving the problem with new Green Ti purchase aside for the moment -- I'm first checking on how the seller may be able to help me,
Two days ago I initiated an rma request with HL for a plain Ti that has a very hot back end and flashes red/blue most of the time (in between periods of actually functioning pretty well). In the request I also told them that their website has now lost track of this hopper's serial number -- the My Grasshopper section shows its previous s/n.
Got email yesterday (24 hrs, not bad) form 'John' telling me no worries, they would correct the s/n issue and I should send it in, with batt. & charger, of course. Answering my question about how long the process might take, he said the current turnaround (if I have both body and back end issues) is 60 to 90 days though they are working on reducing that timing. So, off to Post Office I went, paying > $4 US for 1st class postage.
Meanwhile, the Green Ti out of Canada; I spoke with Sachin at THC (pretty clever there, Herb Cafe!) and he's gonna lobby for me with the Canadian distributor of Grasshoppers, who is his neighbor. I've told Sachin that the problem lies in the back end (I did some testing with known-working parts I have) and my best hope is that they might simple send me a new backend. Due to some travel schedules, I likely won't have answer to that until Monday.