Great idea to add a roller and use the latch and door for support.
I used regular 60"drawer slides https://a.co/d/g0hvyWo and I had to add a kickstand to help stabilize it when fully extended.
Yes same problem here and it was working for years before the last few ota updates. Now it sounds like an LP with some scratches at times.
Not a signal strength issue because signal can be strong and still experience the issue. Also Spotify works just fine.