Panda eyes

Hi this is my first time applying to UofM - I'm in-province, but I go to McGill where the grading system goes up to A only (85-100%), and has A- (80-85%). I asked the lady responsible for AGPA inquiries at UofM and she said that only the letter grade on the transcript will be used for the conversion - meaning that I will only get 4.0 for all my A courses... Apparently Mcgill stopped putting percentage grades on the transcripts since 2002 and they don't even give the option to profs to enter numeric grades along with the letters. So even for someone with straight A's, it will be adjusted to only 4.0 - which is below even the average AGPA of accepted students (4.20). Is anyone else from Mcgill, UofT, etc. (schools with 4.0 scale) in the same situation? Is there ANY way around this? I was always under the impression that A would be equivalent to 4.5, and A- would be 4.0... I'm totally shocked about how grades are converted at UofM.