I'm finding it very hard to ride my trainer. I can be in the lowest of gears working a moderate cadence and my heart rate seems to be to high. So I tried lessening the tension on the rear wheel and this only creates "slippages" of sorts when I spin at a higher cadence and intensity. My trainer is a two years old Cyclops bought from REI. Should I buy a new trainer, HTFU and ride this one, by some rollers, or start running in the park? Thanks for the help guys.