After being away for 4 days and using gas for hot water in the mornings (2 showers ) and a few kettles of tea, I thought we would have used quite a bit of gas. Went to fill up today and the pump was extremely slow but did not cut out. Went to another garage and had the same, it has always filled quickly and stopped at 80% so am a little perplexed, the system is about 10 years old and has been trouble free. Do I have a problem?