the 1000 broke my heart

I just raced my 1000 free 30 seconds slower than last year, and the slowest I have ever swum it. Sigh. I believe I am slower because the base interval at my old team was 1:30 for free, with some sets faster, but rarely slower. I didn't get much rest, but my body was used to a 1:30 pace (I swam with them for 6 years and my times improved each year). Now at my new team, I have been training many more yards, more times per week, and I had hoped to be much faster...and yet, with this training, our lane never keeps a 1:30 interval, and we always get a lot of rest. Does it make sense that my body has gotten used to the rest and so it just doesn't know how to keep a 1:30 anymore? Most discouraged at present. It didn't seem to slow anyone else down, I might add. I am a year older, but STILL. The next lane up from me at this new team keeps a 1:25 pace, a big difference from the lane I swim in, and one I can't do. Any thoughts, advice?