"Yellow/brown pressure mark - far LHS" - issue reported on lab notes. 35mm.

[James Malamatinas]

​We shot a 3-perf, 35mm job yesterday on the Arri LT. We had no issues shooting whatsoever and had done a full days testing with steady tests that came back fine and mag scratch tests that came back clean.

​Today we got yesterday's lab report back and on several of our rolls that have made the following comment:

​"Yellow/brown pressure mark - far left-hand side"

​Neither I, nor the 1st AC, had encountered this before. Can anyone help illuminate a potential cause? We continued shooting on the camera today before the report was received so we'll find out tomorrow if the problem continued overnight. The problem occurs over multiple rolls with different magazines, so I think magazine issues can be ruled out.

​The lab seems to believe it can be graded out but obviously it's not an ideal solution. Any thoughts are much appreciated.