Hi I have a firm sprung kingsize mattress which I purchased 2 years ago. I suffer from lower back problems, Obstructive sleep apnea and recently have had shoulder upper back pain after a nights sleep. I am 5ft 10" tall, 19 stone have a long back some most of my weight is on the upper part of my body-short legs 29" inner leg. I have tried mattress toppers but still do not sleep comfortably. I sleep on my sides if possible to assist my OSA. I think my mattress may be too firm for my heav body weight so would .appreciate views on a handmade mattress to alleviate my problems. Please can someone contact me after the xmas period re a possible solution