I definitely feel your pain. I'm new at this and at first didn't realize how important the accurate seam allowance was. I
now use the post it note pads on the bed of my machine and move the needle over to achieve the 1/4" seam. However,
I'm wondering if it all depends on what block you're doing. If it's a simple block then the scant 1/4" will probably work but if it's a more complicated block where there are lots of bulky seams to iron, then maybe the seam allowance should be
closer to 3/8". I think it's a judgement call.