My new fruit trees suffered earlier this year too. Peach leaf curl is a big problem and it is not just the peaches that get it, A spray is the only answer,
I am afriad, much as I dislike any sprays, In BG the fruit trees get everything so I shall start this winter with my regime.
Have a look the web for a fruit spray programme Looks a bit daunting, but with out it the pests build up and most fruit trees will suffer in time.