My home course (Coventry) is 6590 par 73 and is rated 139, your 235 is incorrect, what course is it and I’ll tell you what it is.
My away course (Woodhall Spa) has a slope ratings of 149 (yellows) and 159 ( whites) on the Hotchkin, so I’d say you might have fat fingers and you meant to type 135🤔