I was told to use Canadian Registered Pension Income which comes with 2 inputs. One is Total Distribution.
I was told that you put the Gross Amount for Total and then the delta of the Gross - Taxes Withheld to get the Taxable Part of Distribution.
this is the part giving me heartache as it is not clear that if I paid Canadian taxes- do I also have to pay US taxes or is is considered double taxation?
unfortunately I think the way described to me by the Tax Advisor from TT is correct.