RE: difficulty loading t/c omega
Think your just going to have to give it time. I also had one of the first years of MK's. I also have a 98 model. The 1998 model is much tighter than the late 80's model. They did tighten up the bores I believe and was told. My three guns proved it too. My new elite has about the same tightness as my late 90's model MK but first 100 rounds was tight and bore rough. I put 200 stokes of JB bore paste thru it. Smoothed it out a bit.
I believe, that the idea of Knight having a oversized bore was from the days gone by. My new elite has diameter (just measured) of inside groove diameter of .509" and lands measurement (tough to get) of .500". Thats about the same as my T/C.
How many rounds do you got thru it? Maybe get some JB Bore paste. Its a semi abrasive cleaner. Put a tight patch on and rub some JB's on. Run it back and forth thru the bore 30 strokes. Clean it out with any gun solvent. Do it again. Do it about 200 strokes. You will feel the differnce loading. May not be easier, but smoother and more consistetn.