If any one has a Tandy /Radio shack / Realistic reverb ready to bend I've posted a photo with some details I've gathered from various places that I used to bend mine. It certainly sounds better now. Did I miss anything good ? For some reason I can't post photos as attachments which is why I'm having to use imgur.
https://imgur.com/gallery/CGjdp3d (https://imgur.com/gallery/CGjdp3d)