Adjusting Z height of prime lines in start G-code

I have found that the prime lines at the front and back (X1C) are too squished on the textured plate, making them difficult to remove at times. Prints come off just fine but the prime lines sometimes really stick on hard.

I don’t really know what I’m doing with the G-code, but some time ago I added the following to the start G-code, right after:
;===== noozle load line ===============================
{if curr_bed_type==“Textured PEI Plate”}
G29.1 Z0.0.04
{endif}

I have in the printer notes that the above should raise the Z height of the prime lines by 0.04mm, but not for the rest of the print. Is this correct?

Assuming the above is correct, I have tried increasing the G29.1 Z all the way up to 0.32mm and that does not seem to have any effect on the prime lines.

Can anyone confirm that the above is correct? Is there something else I need to do to raise the z height of the prime lines?

Thanks in advance.