that doesn't help...
I looked through that thread, first off your website seems to be on strike, so couldn't get that calculator application thing...
Secondly... i compared the PWM section of the 16F1824 datasheet witht the 18F4550 PWM section of the datasheet. The differences were number of PWM's and clock selection...

Other than that the sections on duty cycle and resolutions were almost the same, so it's not chip specific...

How do i make the PWM's 8 bit not 10 bit?