308gts clock adjustment knob

Hi everyone! recently became a member of ferrarichat and LOVE this forum!! I have a 1978 308GTS in silver over black as well as a 1995 348 spider in red over tan... I have picked up so much useful and interesting information on this site that enabled me to repair various minor issues with my recently purchased 348... and though I have had the 308 for 8 years now and it is fairly well sorted Im sure I will have many questions for the future.

With my 308, the interior has been completely restored to high driver level including the dash and all switches and small details. But my clock is missing the adjustment knob... anyone have a spare clock adjustment knob I can buy, or do any fellow owners know where I could obtain a suitable replacement?

also, I live 1 hr north of New Orleans now and need to know if there are any trustworthy and reasonable shops known to fellow members in the area of New Orleans, Baton Rouge, Jackson Mississippi etc that could carry out my 30K service? My 308 has 20,000 miles but it has been 5 yrs since the belts were done (though the car has been driven only 2000 miles since then) and I figure I better be safe than very sorry!!