How are you able to lose only a little wort volume by leaving most of the trub in the pot? By the time I reach pitching temperature, the protein solids have not even dropped halfway out of suspension in my pot -- I can still see them within a few inches of the top of the wort. Are you just waiting until it settles before transferring and pitching?
I don't stress about it....some makes it into the fermenter. I usually stir my pot for about a minute at flameout, then use a wort chiller. I don't stir during cooling, and it takes about 15 to get down to pitching temps. I try not to agitate the pot...and I pour through a stainless mesh strainer. For me the first few gallons pour clear...gallon 3 and 4 have more hop particles in suspension that get caught in the screen. Once I hit the thicker junk...I stop pouring for a moment to allow the last gallon or so to settle...then pour slowly until I hit the thick stuff.
Clearly IPA's and heavily hopped beers have more....and I'll let more stuff get through if my volume is really short. The remaining wort is the heaviest (bummer), but my efficiency is good...and I know I'll be leaving a quart or two in the pot with all the gunk...that is offset by the reduction in trub in the fermenter later.