Thank you for your patient and informative replies!!
i calculated it - instead of a $36 refund, I should get a $1 refund!?!!
More problems -
I mailed in my 1040X and changed 1040NR...I was looking at the photocopies of the forms and realised a typo with the gross income from wages, salaries,etc. on my 1040x. The 1040NR-EZ is correct.
For example :
instead of gross income on original = xx300, increase or decrease amount =0, corrected amount= xx300
the form shows gross income on original = xx300, increase or decrease amount =0, corrected amount=
xx600
But all the calculations on the form are correct and with respect to xx300.
Do I need to file in another 1040x for my orig 1040x, or let it be?
Whew!