@atmasphere I considered trying to bake the tapes, but at that time in my life, I had neither the time or inclination to do so. I do have a head demagnetizer. It came with a Teac reel-to-reel maintenance kit, which has just about everything one needs to clean and service the heads, pinch rollers, transport mechanism, splice tapes, and leaders, etc. I’ve had it since 1981.
Back in the 80’s and early 90’s when I used my R2R a lot, I’d demagnetize the heads and transport mechanism about once a month. I did not know if that was enough or too much, but it worked for me. I did keep the demagnetizer away from my tapes 😀.