Feed dogs are not coming up high enough to catch...

Question

the feed dogs are not coming up high enough to catch the fabric when I first start feeding in the fabric. I just had the machine serviced and cleaned and I expressed this problem and he said everything is fine. But I know this has not been addressed. It is still not working properly. I need to put the fabric in under the needle at least 2 stitches past the needle for it to start pulling the fabric through.
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