Replacing Coupling Capacitors in Vintage Gear

BG236 - Why you should replace coupling capacitors in vintage gear and how to best go about it. This applies to old amplifiers, tuners, preamps, tube gear, computers, TVs, stereos, receivers, ham radio gear, etc.
Link to PTFE Tubing I use. Check sellers other auctions, I use a variety of ID from 0.7mm, 0.9mm, 1.0mm, 1.1mm, etc.
www.ebay.com/itm/3-10M-PTFE-T...