IDE specification is for max cable length is eighteen inches.
Twenty-four inches is relatively common, but technically outside the official IDE specifications.
Any longer than that and I wouldn't count on it working, plain and simple.
Considering that Xbox uses some proprietary disc format that's not CD or DVD, the likelihood that using a connection out of spec will work is even less. You've been given this information before, but you don't seem to think it's worthwhile or are just plain ignoring it.
You need to come up with a new plan. Sorry if you don't like that, but it's fact.