Glen,

Probably a typo:

You said

"..I have a pulldown on MCLR and the LED's are connected with resistors.. I want to use the internal oscillator, and no WDT."

A pulldown (tied to ground) on MCLR will keep the pic from working. I assume, since you said your PIC16's programs function its just a typo and you are using a "pullup" resistor (tied to Vcc) on MCLR. Don't give up!