Has anyoe had problems using the mint LP tractor

I have just spent about 2 or 3 hours trying to reset my cartridge using my newly acquired Mint LP Tractor and quite frankly I have found the whole experience very frustrating. I have put it down to inexperience on my part and aging eyesight........... surely I can't be the only person who has experienced difficulties, although reading the various threads here on the tractor it's beginning to look like I am!!! I intend having another attempt in a day or so, in the meantime any advice from the 'professionals' would be welcome.