Just to clarify - I didn't know what you meant by blending.... I guess you mean that you put it in the blender!!!
Anyway, that is what I did to Rowdy's food too - although I didn't use the blender, I just pounded it till it was fine. However, sometimes Rowdy would eat it and sometimes he wouldn't - so.... when he wouldn't I would use he Gerber (human) toddler chicken weenies, cottage cheese and wet food - ANYTHING to get him to eat. Sometimes I could put just a tiny bit of kayro syrup on his dry food and he would eat it. I know dry is best, but sometimes they just won't eat it for a while. Also, I tried switching Rowdy to California Natural but the kibbles are bigger and hard and he still will not eat it at 7 1/2 months old and 4 lbs. He DOES NOT like bigger, hard kibbles. I am in the process of switching him to Solid Gold, wee bits for small dogs - he just eats so much better when the kibble is tiny. Maybe he'll do better when he is bigger, but for now, that's about it.