Hi, I have just had a Magnet kitchen installed and a new hob fitted on the 18th of May. It came to my attention shortly after, that the back of middle draw in the unit under the hob is just hitting the gas stopcock, I would say that the draw is not closing fully by about 0.5 to 1 mm. After several text messages, and his agreeance to come out, but failing to do so, I again asked if he would come out next week, his reply was "yes mate but I will have to charge to re-do this". My question is, is this unsafe? the draw is soft close and the back is made of thin flexible steel. I have his gas safe registration number on his certificate.