McIntosb C41 lamp replacement

I Am purchasing lamps for my C41 preamp. Any advice on replacing panel lamps?
It's fairly easy for anyone with basic mechanical knowledge. Hit up Audio Classics in Vestal NY for parts and any special tips on that particular unit. Good luck & happy listening.
While you're at it, why not replace them with the LED kit they make for the C41. It sells for $189, but will put an end to light replacement.