Hi, I have had ongoing issues with my 4iii power mete. I have tried lots of different options over the last four weeks with it. can I send it back to you guys and can you please send me one back ASAP because I need it for my training for the road nationals listen them two weeks. and I did upgrade the chain rings to 54-40. I do not have a spare crank set to put on my bike so if we can it’d be awesome if we can get this sorted ASAP thank you.