The issue has been resolved, lets just call it a fueling glitch!
Gemma had only been doing very short (3 miles a day) trips so instead of doing 140 miles on a tank it only did a 100! It has been given a good run and we are going to make sure it get a good run every week to keep running OK. The bike did get mini service in the process of finding out the fact it had run out of gas! To be fair to Gemma three blokes (including one who use to own a motorcylce dealership) could not figure out it had run out of petrol!
