Yesterday I drove an hour to pick up a V3i off Craigslist. Everything tested out fine when I bought it. By the time I drove back, I had about half an hour of sunlight so went to the park and found about half a dozen coins. When I got home, I restored the modified programs and went out in the grass to adjust to my liking when the machine started behaving erratically. I noticed the battery voltage was getting low, so thought that might be the problem. Today when I got home, I inserted the recharged battery and it’s still acting up. I searched the forums here and found someone else has reported the same issue, but I didn’t see a post about it being resolved. Any help is appreciated!