I decided to back flush my heater core myself, had to goto my gfriends she has a garden hose. I bought some rad flush chemical and some clear tubing to hook up to the in and out pipes to the heater core, I didn't want to flush my whole system as I have already done that before. Just blowing on the line i could see some bits coming out. So I hooked up the garden hose and ran it through, more chunks came out (nothing exessive). I drained the heater core by blowing then poured the flush chemical in the tubing, then would blow until it got to the other line, I'd blow on one hose then the other, and I could see more debry in the clear hose. So I let that sit for about an hour, then flushed it out with the garden hose both ways, not tons of debry came out but enough to make me wonder if the place I got my heater core back flushed at even did it. I would get my buddy to plug the hose with his thumb and I'd blast the garden hose on the other hose and more stuff would come out. Well now I have perfect heat on both sides.
Thanks man, you don't know how many mechanics said it wouldn't be the heater core.
I think the place I brought my car to just back flushed the whole system again not focusing on the heater core itself. It's funny because it wasn't untill I got my coolant system flushed the first time that I notice I hade crappy heat on one side. I even took It back to the same place and, they said it wouldn't be the heater core. I figure they dislodged something and it clogged it enough that my heat was low on one side. Most of the sediment came from one side of the tubing only.