Does it matter which capacitor (the one on OSC1 or OSC2) is variable to trim the crystal frequency ? I've looked in all the MChip oscillator pdfs I can find but they don't say. Maybe it doesn't matter or maybe they left it out TIA -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist