Spoke to Craig at hydramaster he said the pump head was damaged so they replaced it also they used a repair kit on the preasure regulator.Also told them when i turn pump on the gauge jumps from 300 to 100 and does this for about 20 seconds they think that there must be air comming in from somewere so looks like i will be sending it back again.Fair play to them they are going to credit my acount with £100 and throw in in some chems.