Hm, i have a feeling i may be just acting a bit paranoid....because i just went and serviced/checked the cooling system. There were some bubbles in it, and there was also not quite enough coolant in it either. I just filled it up, and it seems to be doing MUCH better.

BUT! (yes theres still a hitch...!!)

When the engine is warmed up, and i rev the throttle, response is VERY sluggish and slow...That is my second concern. What could be causing that?