Hi Skelton!
Me too,recurrent bouts of thrush and the tight foreskin(Known as balantitis) was a major problem for me,basically some of the excess glucose in your blood bypasses the kidneys filteration system and ultimately as your down below is a warm moist place(unless you're a naturist),the mixture of sugar in your urine and warm conditions is a PERFECT breeding ground for bacteria and the yeast overgrowth that causes the symptoms you and I have experienced..The good news is when i managed to reduce my Blood glucose levels down below 9mmol consistently(they were between 21mmol and over 33mmols) the problem did resolve itself and I've been fine ever since. I don't know what your sugar levels are doing but if they are good and this is persisting then a trip to the Doc would be good.
Paul