Apr, 2013.
Wife bought a 2005 Heritage and immediately complained about the difficulty in pulling the clutch in.
Harley sells an Easy Pull kit for $50 which consists of a clutch "ramp" as illustrated in the pictures and a clutch spring, P/N 36808-05 that fits '99 - '05 twin cam models. The new ramp reduces the ramp angle from stock 21 degrees (stamped on ramp) to 19 degrees (not stamped on ramp). That helped a little.
But the BIG difference was installing the supplied clutch spring accessible via the left side cover that is used to inspect chain oil level. Wow! That really made pulling the clutch easy.
One more thing. We ordered some aftermarket levers that are chromed and thinner than stock and the clutch lever has 5 adjustable positions of reach. I put the clutch lever on the closest and she is very happy (brake lever has no adjustments but is thinner therefore a bit close to the bar). She wants thinner grips so that is next.
In 2006 HD started putting this new spring and ramp on the softails stock from the factory. They also started using teflon inner coated clutch cables. That is also supposed to help a wee bit but I think it would be very minor and don't feel the need to go there.
Google easy pull clutch and you'll get a variety of how-to instructions.
Norm