Yeah, that seems a little large. What is the cubic capacity of the bucket? If it is a shallow bucket, you may be be alright. According to tractordata.com, the width of the CT36 is 66.5 inches. I recommend going down to a 6' bucket. Unless dealing with light material (mulch or feed) in an open space, it is preferable for the bucket to extend past the width of the tires by a few inches. Otherwise, you will find your yourself getting the bucket caught on fences posts, edges of buildings, and other items you would rather not bump into.
When dealing with heavier material, in addition to significantly throwing off the center-of-gravity, you will find that you often will exceed the capacity of the loader hydraulics.
Your dealer should be able to get a 6' bucket for the loader. Did you buy it from a dealer like that?
Hawk