Hi Tracey! Sounds like your scope uses .965" eyepieces, whereas the Celestron eyepiece kit has 1.25" eyepieces. There are adaptors available to let you use the larger eyepieces with your scope. I believe you may find such an adaptor at either AgenaAstro.com or ScopeStuff.com. Using this adaptor will affect your focus point requiring more inward travel of the focuser tube. It is unfortunate that you weren't cognizant of the differing eyepiece diameters when you bought the Celestron kit but they will stick with you for a long time, hopefully to a new and better scope in the future.
Denham Springs, Louisiana USA
"Second star to the right - Then straight on until morning!" - Peter Pan
Celestron CPC1100GPS (XLT) - 279mm aperature, 2800mm Focal length. (f10) Celestron Ultima LX (70deg AFOV) Eyepieces 32mm thru 5mm, Canon EOS Rebel T2i DSLR, Backyard EOS imaging software, Orion Star Shoot Planetary Imager IV, Celestron Skymaster 15x70 binoculars