B. If the terms of a trust specify the trustee's compensation or refer to another ascertainable source for determining that compensation, the trustee is entitled to be compensated as specified, but the court may allow more or less compensation if either:

1. 1. The duties of the trustee are substantially different from those contemplated when the trust was created.
2. 2. The compensation specified by the terms of the trust would be unreasonably low or high.