Patrick, The oscillator cap and base were coated with paraffin. Over the years heat causes the paraffin to melt and the two parts adhere. Try heating the cap a bit with a hair dryer until the bond loosens up. Then keep the two pieces moving while it cools down. The whole assembly has to be back at "operating" temperature to get an accurate tuning. Regards, Ed PATRICK LANE <capt737aa@xxxxxxx> wrote: Hi All... I'm in the midst of tuning my 340 and have a few core caps which are VERY difficult to turn for the tuning. Does anyone have some ideas on how to make them turn without destroying the oscillator itself from the ciruit board? Thanks in advance. Pat ---------------------------------------------------------------------------- Add photos to your messages with MSN 8. [1]Get 2 months FREE*. --- Links --- 1 http://g.msn.com/8HMCENUS/2749??PS= ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Find new MIDI music and Guides to Rodgers Organs at www.frogmusic.com To post send messages to: rodgersorgan@xxxxxxxxxxxxx To unsubscribe or change mail delivery (digest, vacation) go to www.frogmusic.com/rodgersmem.html --------------------------------- Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Find new MIDI music and Guides to Rodgers Organs at www.frogmusic.com To post send messages to: rodgersorgan@xxxxxxxxxxxxx To unsubscribe or change mail delivery (digest, vacation) go to www.frogmusic.com/rodgersmem.html