Serbinski Accounting Firms

I'm a Cdn resident. I will work for a US company in the US for about 24 days in a given year and will make less than $10,000. Given current treaty rules, assuming, no withholding, do I have to file a 1040NR, 8233, 8833 or anything for that matter. I've heard/read that in this situation (under 10,000...